Low-heat-release low-smoke halogen-free electric wire
By using glass fiber filler layer and flame retardant balls to fill the flame retardant gas in halogen-free wires, the problems of high temperature decomposition and smoke generation during fire are solved, and the effect of low heat release and low smoke is achieved.
Patent Information
- Application Number
- CN202421706556.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-18
AI Technical Summary
Conventional halogen-free wires decompose a large amount of heat when burned by fire and produce smoke, which is not conducive to the escape of people during fire.
The low-thermal release, low-smoke, halogen-free wire design is adopted, including a cable core, oxygen barrier, isolation layer and sheath layer. A glass fiber filling layer is filled between the cable core and oxygen barrier layer, and multiple flame retardant balls are provided in the filling layer, and the flame retardant balls are filled with flame retardant gases, such as nitrogen or carbon dioxide.
During fire, glass fibers cannot burn, and flame-retardant gases suppress combustion, significantly reduce the generation of heat and smoke, and achieve low heat release and low smoke effect.
Smart Images
Figure CN222838602U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of halogen-free electric wires, in particular to a low-thermal-release and low-smoke halogen-free electric wire. Background Art
[0002] Low smoke halogen-free wire refers to the halogen material of the wire insulation layer. When burning, it does not release halogen-containing gas and has low smoke concentration. The reference standard is JB / T 10491-2004. The models are WDZ-BYJ, WDZ-RYJ, etc. A large number of domestic manufacturers have the production capacity. It is suitable for places with rated voltage of 450 / 750V and below, with halogen-free, low smoke, flame retardant requirements and high safety and environmental protection requirements. Such as high-rise buildings, stations, subways, airports, hospitals, large libraries, gymnasiums, villas, family homes, hotels, hospitals, office buildings, schools, shopping malls and other crowded places.
[0003] When conventional halogen-free wires are burned by fire, the internal materials of the cable will decompose a large amount of heat due to the high temperature and produce a certain amount of smoke, which is not conducive to the smooth escape of people when a fire occurs. Utility Model Content
[0004] The utility model aims to provide a low-thermal-release, low-smoke, halogen-free electric wire to solve the technical problem that the conventional halogen-free electric wire decomposes a large amount of heat at high temperature when burned by fire, and produces a certain amount of smoke, which is not conducive to the smooth escape of personnel when a fire occurs.
[0005] The embodiments of the present invention are implemented by the following technical solutions:
[0006] A low-heat-release, low-smoke, halogen-free electric wire comprises a cable core, an oxygen-insulating layer, an isolation layer and a sheath layer.
[0007] The oxygen barrier layer is coated on the outside of the cable core;
[0008] The isolation layer is coated on the outside of the oxygen isolation layer;
[0009] The sheath layer is coated on the outside of the isolation layer;
[0010] Therein, a filling layer is provided between the cable core and the oxygen-isolating layer, the filling layer material comprises glass fiber, a plurality of flame-retardant balls are arranged inside the filling layer, and flame-retardant gas is filled inside the flame-retardant balls.
[0011] In some embodiments, the flame retardant gas is nitrogen and / or carbon dioxide.
[0012] In some embodiments, the flame retardant gas is carbon dioxide.
[0013] In some embodiments, the cable core includes a wrapping tape and a cable inner core, and the wrapping tape is disposed on the outside of the cable inner core.
[0014] In some embodiments, the cable core includes a conductor layer, a conductor shielding layer, and an insulating layer. The conductor shielding layer is coated on the outside of the conductor layer, and the insulating layer is coated on the outside of the conductor shielding layer.
[0015] In some embodiments, the material of the conductor layer includes copper wire.
[0016] In some embodiments, the isolation layer is formed by wrapping a glass fiber tape around the outer side of the oxygen isolation layer.
[0017] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:
[0018] (1) The low thermal release, low smoke, and halogen-free electric wire of the utility model adopts glass fiber as the filling layer. The glass fiber is non-flammable and will only generate a small amount of heat when burned, thereby achieving low thermal release and low smoke.
[0019] (2) The low thermal release, low smoke, and halogen-free electric wire of the utility model has a plurality of flame-retardant balls inside the filling layer, and the flame-retardant balls are filled with flame-retardant gas. The flame-retardant gas can inhibit the combustion of the cable, thereby reducing the heat generated by the cable when it burns, achieving low thermal release and low smoke.
[0020] (3) The low thermal release, low smoke and halogen-free electric wire of the utility model has reasonable design, simple structure and good practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 A schematic cross-sectional view of a low thermal release, low smoke, and halogen-free electric wire provided by an embodiment of the utility model;
[0023] Figure 2 A schematic cross-sectional view of a low thermal release, low smoke, and halogen-free electric wire provided by another embodiment of the utility model;
[0024] icon:
[0025] 100, cable core;
[0026] 200, oxygen barrier;
[0027] 210, flame retardant ball;
[0028] 300, isolation layer;
[0029] 400, sheath layer;
[0030] 500. Protective net cover. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0032] Example
[0033] The embodiment of the present application provides a low thermal release, low smoke, halogen-free wire to solve the technical problem that the conventional halogen-free wire decomposes a large amount of heat at high temperature when burned by fire and produces a certain amount of smoke, which is not conducive to the smooth escape of people when a fire occurs.
[0034] See also Figure 1 The embodiment of the present application provides a low-heat-release, low-smoke, halogen-free electric wire, comprising a cable core 100, an oxygen-isolating layer 200, an isolation layer 300 and a sheath layer 400.
[0035] The oxygen-isolating layer 200 is coated on the outside of the cable core 100 to isolate the cable core 100 from oxygen. When burning, oxygen will produce a combustion-supporting effect. Isolating the cable core 100 from oxygen can be flame-retardant, reducing the heat and smoke generated by high-temperature decomposition of the halogen-free wire when burned by fire. In some embodiments, the cross-section of the cable core 100 is circular;
[0036] The isolation layer 300 is coated on the outside of the oxygen isolation layer 200;
[0037] The sheath layer 400 is coated on the outside of the isolation layer 300 to provide physical protection for the cable. Figure 2 In some embodiments, a protective mesh sleeve 500 is provided outside the sheath layer 400 to further protect the cable;
[0038] Among them, a filling layer is filled between the cable core 100 and the oxygen insulation layer 200. The filling layer material includes glass fiber. The glass fiber is non-combustible and only generates a small amount of heat when burned, thereby achieving low thermal release and low smoke. A plurality of flame retardant balls 210 are arranged inside the filling layer. The flame retardant balls 210 are filled with flame retardant gas to suppress the combustion of the cable through the flame retardant gas, thereby reducing the heat generated by the cable when burning, thereby achieving low thermal release and low smoke.
[0039] In some embodiments, the flame retardant gas is nitrogen and / or carbon dioxide, so that the flame retardant gas can suppress the combustion of the cable, thereby reducing the heat generated by the cable when it burns, and achieving low heat release and low smoke.
[0040] In some embodiments, the flame retardant gas is carbon dioxide, so that the flame retardant gas can inhibit the combustion of the cable, thereby reducing the heat generated by the cable when it burns, and achieving low heat release and low smoke.
[0041] In some embodiments, the cable core 100 includes a wrapping tape and a cable inner core, and the wrapping tape is disposed on the outside of the cable inner core.
[0042] In some embodiments, the cable core includes a conductor layer, a conductor shielding layer, and an insulating layer. The conductor shielding layer is wrapped around the outside of the conductor layer, and the insulating layer is wrapped around the outside of the conductor shielding layer. In some embodiments, the cable core includes a conductor layer, a conductor shielding layer wrapped around the outside of the conductor layer, an insulating layer wrapped around the outside of the conductor shielding layer, an insulating shielding layer wrapped around the outside of the insulating layer, and a copper tape shielding layer wrapped around the outside of the insulating shielding layer. In some embodiments, the cable core includes a conductor layer, a conductor shielding layer wrapped around the outside of the conductor layer, a polypropylene insulating layer wrapped around the outside of the conductor shielding layer, an insulating shielding layer wrapped around the outside of the polypropylene insulating layer, and a copper tape shielding layer wrapped around the outside of the insulating shielding layer.
[0043] In some embodiments, the material of the conductor layer includes copper wire. In some embodiments, the surface of the conductor is smooth and free of burrs.
[0044] In some embodiments, the isolation layer 300 is formed by wrapping a glass fiber tape around the outer side of the oxygen isolation layer 200. The glass fiber is non-flammable and will only generate a small amount of heat when burned, thereby achieving low heat release and low smoke.
[0045] The following is a detailed description of the low heat release and low smoke halogen-free wire of the present application to achieve low heat release and low smoke combustion:
[0046] When a low-thermal-release, low-smoke, halogen-free wire of the present application burns, since a filling layer is formed between the cable core 100 and the oxygen-isolating layer 200, the filling layer material includes glass fiber, which is non-combustible and will only generate a small amount of heat when burned, thereby achieving low-thermal-release and low-smoke. A plurality of flame-retardant balls 210 are arranged inside the filling layer, and flame-retardant gas is filled inside the flame-retardant balls 210 to suppress the combustion of the cable through the flame-retardant gas, thereby reducing the heat generated by the cable when it burns, thereby achieving low-thermal-release and low-smoke. Secondly, the isolation layer 300 is wrapped around the outer side of the oxygen-isolating layer 200 by a glass fiber tape through a wrapping method, and the non-combustible property of the glass fiber further achieves the effect of low-thermal-release and low-smoke, which is more environmentally friendly than traditional halogen-free wires.
[0047] The low thermal release, low smoke, and halogen-free wire of the present application has at least the following advantages:
[0048] (1) The low thermal release, low smoke, and halogen-free electric wire of the utility model adopts glass fiber as the filling layer. The glass fiber is non-flammable and will only generate a small amount of heat when burned, thereby achieving low thermal release and low smoke.
[0049] (2) The low thermal release, low smoke, and halogen-free electric wire of the utility model has a plurality of flame-retardant balls inside the filling layer, and the flame-retardant balls are filled with flame-retardant gas. The flame-retardant gas can inhibit the combustion of the cable, thereby reducing the heat generated by the cable when it burns, achieving low thermal release and low smoke.
[0050] (3) The low thermal release, low smoke and halogen-free electric wire of the utility model has reasonable design, simple structure and good practicality.
[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A low thermal release, low smoke, halogen-free electric wire, characterized in that: include: Cable core; An oxygen barrier layer, coated on the outside of the cable core; An isolation layer, covering the outside of the oxygen isolation layer; A sheath layer, covering the outside of the isolation layer; Therein, a filling layer is provided between the cable core and the oxygen-isolating layer, the filling layer material comprises glass fiber, a plurality of flame-retardant balls are arranged inside the filling layer, and flame-retardant gas is filled inside the flame-retardant balls.
2. The low thermal release, low smoke, halogen-free electric wire according to claim 1, characterized in that: The flame retardant gas is nitrogen and / or carbon dioxide.
3. The low thermal release, low smoke, halogen-free electric wire according to claim 2, characterized in that: The flame retardant gas is carbon dioxide.
4. The low thermal release, low smoke, halogen-free electric wire according to claim 1, characterized in that: The cable core comprises a wrapping tape and a cable inner core, and the wrapping tape is arranged on the outside of the cable inner core.
5. The low thermal release, low smoke, halogen-free electric wire according to claim 4, characterized in that: The cable inner core comprises a conductor layer, a conductor shielding layer and an insulating layer. The conductor shielding layer is coated on the outside of the conductor layer, and the insulating layer is coated on the outside of the conductor shielding layer.
6. The low thermal release, low smoke, halogen-free electric wire according to claim 5, characterized in that: The material of the conductor layer includes copper wire.
7. A low thermal release, low smoke, halogen-free electric wire according to any one of claims 1 to 6, characterized in that: The isolation layer is wrapped around the outer side of the oxygen isolation layer by a glass fiber tape.