Low-smoke halogen-free low-toxicity flame-retardant B1-level control cable

Abstract

The utility model relates to the technical field of cables, and discloses a low-smoke halogen-free low-toxicity flame-retardant B1-level control cable, which comprises an armor layer, a chemical erosion prevention sheath is arranged in the armor layer, a waterproof layer is arranged in the chemical erosion prevention sheath, an electromagnetic shielding layer is arranged in the waterproof layer, and a flame-retardant layer is arranged in the electromagnetic shielding layer. A conductor is arranged in the electromagnetic shielding layer, an insulating layer is arranged outside the conductor, and a flame-retardant filling material is arranged outside the insulating layer. According to the low-smoke halogen-free low-toxicity flame-retardant B1-level control cable, through the mutual cooperation of the armor layer, the chemical erosion prevention sheath, the waterproof layer, the electromagnetic shielding layer, the conductors, the insulating layers and the flame-retardant filler, the tensile strength, the wear resistance and the aging resistance are improved, effective protection is provided for chemical erosion, and meanwhile, the power loss in the transmission process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a low-smoke, halogen-free, low-toxicity, flame-retardant B1-level control cable. Background Art

[0002] The cable is made of one or more mutually insulated conductors and an outer insulating protective layer. Each group of conductors is insulated from each other and are often twisted around a center. The entire outside is covered with a highly insulating covering layer. The cable has the characteristics of being powered inside and insulated outside.

[0003] The halogen-free or low-halogen materials used in existing B1-class control cables are slightly inferior to traditional cables in terms of mechanical properties, such as tensile strength, abrasion resistance, and aging resistance. In addition, under certain conditions, such as long-term operation in high-temperature environments, highly flame-retardant materials may affect the electrical insulation properties of the cables, leading to increased resistivity, changes in dielectric constant, and other problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing B1 class cables in the prior art use halogen-free or low-halogen materials, which are slightly inferior to traditional cables in mechanical properties. For this reason, we propose a low-smoke, halogen-free, low-toxicity, flame-retardant B1 class control cable.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a low-smoke, halogen-free, low-toxicity, flame-retardant B1 class control cable, comprising an armor layer, a chemical-resistant sheath is arranged inside the armor layer, a waterproof layer is arranged inside the chemical-resistant sheath, an electromagnetic shielding layer is arranged inside the waterproof layer, a conductor is arranged inside the electromagnetic shielding layer, an insulating layer is arranged outside the conductor, and a flame-retardant filler is arranged outside the insulating layer.

[0006] Preferably, the armor layer is made by continuously winding a stainless steel strip.

[0007] Preferably, the chemical corrosion resistant sheath is made of polytetrafluoroethylene material.

[0008] Preferably, the waterproof layer is made of LSZH material.

[0009] Preferably, the electromagnetic shielding layer is made by weaving copper wires.

[0010] Preferably, the conductor is made of high-purity electrolytic copper.

[0011] Preferably, the insulating layer is made of ethylene propylene rubber.

[0012] Preferably, the flame retardant filler is made of aluminum hydroxide.

[0013] Technical effects and advantages of the utility model:

[0014] In the utility model, through the mutual cooperation of the armor layer, the anti-chemical corrosion sheath, the waterproof layer, the electromagnetic shielding layer, the conductor, the insulating layer and the flame retardant filler, the tensile strength, the wear resistance and the aging resistance are improved, and effective protection against chemical corrosion is provided, while the power loss in the transmission process is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the expanded structure of the conductor and the insulating layer of the utility model;

[0018] Figure 4 It is a front cross-sectional structural schematic diagram of the utility model;

[0019] Figure 5 It is a left side sectional structural schematic diagram of the utility model.

[0020] Legend: 1. Armor layer; 2. Anti-chemical corrosion sheath; 3. Waterproof layer; 4. Electromagnetic shielding layer; 5. Conductor; 6. Insulation layer; 7. Flame retardant filler. DETAILED DESCRIPTION

[0021] The present invention will now be further described in detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0022] Reference Figure 1-Figure 5As shown, the utility model provides a technical solution: a low-smoke, halogen-free, low-toxicity, flame-retardant B1-level control cable, comprising an armor layer 1, an anti-chemical corrosion sheath 2 is arranged inside the armor layer 1, a waterproof layer 3 is arranged inside the anti-chemical corrosion sheath 2, an electromagnetic shielding layer 4 is arranged inside the waterproof layer 3, four conductors 5 are arranged inside the electromagnetic shielding layer 4, an insulating layer 6 is arranged outside the conductor 5, and a flame-retardant filler 7 is arranged outside the insulating layer 6. The armor layer 1, the anti-chemical corrosion sheath 2, the waterproof layer 3, the electromagnetic shielding layer 4, the conductor 5, the insulating layer 6 and the flame-retardant filler 7 are used in combination to jointly improve the pulling force of the cable. Tensile strength, wear resistance and aging resistance, effective protection against chemical erosion, and reduced transmission power loss. The armor layer 1 made of high-strength material protects the cable from physical impact. The anti-chemical erosion sheath 2 made of special materials is corrosion-resistant. The waterproof layer 3 enhances the waterproof ability of the cable to ensure that the electrical performance is maintained in a humid or underwater environment. The electromagnetic shielding layer 4 reduces electromagnetic interference and improves signal transmission stability. The high-quality material of the conductor 5 reduces resistance and improves current transmission efficiency. The insulating layer 6 ensures long-term stable insulation performance. The flame retardant filler 7 enhances safety performance, which can delay the fire at high temperature or fire, and provide evacuation and equipment protection time.

[0023] Reference Figure 2 As shown, in this embodiment: the armor layer 1 is made of stainless steel strips continuously wound, and the solid shell formed by continuously winding the stainless steel strips can be tightly wrapped around the outer layer of the cable like armor. This design not only enhances the compressive strength of the cable, but also effectively resists external impact and tensile force. When the cable is subjected to heavy pressure, mechanical damage or other forms of external force, the armor layer 1 can disperse and withstand these forces, thereby protecting the conductor 5 and the insulating layer 6 inside the cable from damage. At the same time, stainless steel has good strength and ductility, and can be deformed without breaking when subjected to external force, which provides additional safety for the cable.

[0024] Reference Figure 2 As shown, in this embodiment: the chemical corrosion resistant sheath 2 is made of polytetrafluoroethylene material, and polytetrafluoroethylene is almost not corroded by all chemical reagents, including strong acids, strong alkalis and various organic solvents, which enables the sheath made of polytetrafluoroethylene to maintain good corrosion resistance when exposed to various harsh chemical environments. At the same time, polytetrafluoroethylene has an extremely low surface friction coefficient, which means that the friction between the parts using the polytetrafluoroethylene sheath is small, reducing wear and tear, and also reducing the heat generation caused by friction in the moving parts, further enhancing the safety of the equipment in high temperature environments or during chemical reactions. In addition, the polytetrafluoroethylene sheath has a long service life and is often used as an anti-corrosion protective layer for equipment such as pipelines, cables, and instruments.

[0025] Reference Figure 2As shown, in this embodiment: the waterproof layer 3 is made of LSZH material. The waterproof layer 3 made of LSZH material can provide a good waterproof barrier due to its excellent material properties, prevent moisture from invading the inside of the cable, extend the service life of the cable in a humid environment, and ensure the stable operation of the electrical system. At the same time, the LSZH material does not contain halogens, such as chlorine, bromine, etc., and does not produce toxic hydrogen halide gas when burned, reducing the harm to the environment and human health. When the cable encounters a fire, the smoke density generated by the combustion of LSZH material is low, which can effectively improve visibility, facilitate the evacuation of personnel in emergency situations and the rescue operations of firefighters, and also has certain flame retardant properties, which can prevent the spread of fire to a certain extent, and meet the fire safety requirements of specific occasions.

[0026] Reference Figure 2 As shown, in this embodiment: the electromagnetic shielding layer 4 is made of copper wire weaving. The mesh structure formed by weaving copper wire can provide all-round electromagnetic shielding effectiveness. No matter from which direction the electromagnetic wave invades or escapes, it can be effectively blocked, which helps to reduce electromagnetic interference and electromagnetic radiation. At the same time, the copper wire braided layer can bend freely as the shape of the cable changes due to its flexible weaving structure, and is well adapted to various complex installation environments and dynamic loads. It is especially suitable for applications that require repeated bending and movement. The copper wire braided layer has a certain porosity, which helps to dissipate heat inside the cable, thereby improving the heat dissipation performance of the cable to a certain extent.

[0027] Reference Figure 3 As shown, in this embodiment: the conductor 5 is made of high-purity electrolytic copper. The use of high-purity electrolytic copper as the material of the conductor 5 ensures good conductivity and is not easy to oxidize, reduces resistance, and thus reduces power loss during transmission. Electrolytic copper is high-purity copper extracted from copper ore through an electrolytic refining process, and its purity can usually reach more than 99.99%. This high purity ensures that the electrolytic copper has excellent conductivity, and the high-purity electrolytic copper further improves its conductivity, so that the current can be smoother during transmission, reducing resistance, thereby reducing power loss during transmission. Due to its excellent conductivity and oxidation resistance, high-purity electrolytic copper can reduce resistance, thereby reducing power loss during transmission and improving the efficiency of the entire system.

[0028] Reference Figure 3As shown, in this embodiment: the insulating layer 6 is made of EPDM rubber. The insulating layer 6 made of EPDM rubber can maintain stable performance in harsh environments such as severe cold, high temperature, and humidity to ensure the normal operation of the cable. EPDM rubber has high insulation resistance and voltage resistance, can effectively prevent electrical interference between the conductor 5 and the outside world, and ensure the stability of cable transmission signals. EPDM rubber has good resistance to oils and can maintain insulation performance in oily environments. It is suitable for cable applications in the petroleum, chemical and other industries. The insulating layer 6 made of EPDM rubber has high tensile strength, tear strength and wear resistance, can resist external mechanical damage, and ensure the safe operation of the cable. As an excellent insulating material, EPDM rubber plays an important role in cables. Its excellent weather resistance, ozone resistance, water resistance, oil resistance and good electrical insulation performance make the insulating layer 6 made of EPDM rubber have broad application prospects.

[0029] Reference Figure 4 As shown, in this embodiment: the flame retardant filler 7 is made of aluminum hydroxide. Aluminum hydroxide, as an inorganic flame retardant, has excellent flame retardant properties and environmental protection characteristics. In the cable manufacturing process, adding aluminum hydroxide to the cable insulation material can effectively improve the flame retardant properties of the cable. When a fire occurs in the cable, the aluminum hydroxide flame retardant can decompose at high temperature and absorb a large amount of heat, thereby reducing the temperature inside the cable and delaying the spread of the fire. At the same time, aluminum hydroxide can also generate water vapor during the decomposition process to dilute the oxygen and combustible gas in the air, further suppressing the burning of the flame.

[0030] Working principle: The cable is composed of conductor 5, insulation layer 6, flame retardant filler 7, electromagnetic shielding layer 4, waterproof layer 3, chemical erosion resistant sheath 2 and armor layer 1 from the inside to the outside. This multi-level structural design enables the cable to perform well in a complex working environment. Conductor 5 is the core part of the cable and is responsible for the transmission of current. By using high-purity electrolytic copper as the material of conductor 5, it ensures good conductivity and is not easy to oxidize, reducing resistance and thus reducing power loss during transmission. The insulation layer 6 is located outside the conductor 5 and mainly plays an isolation and protection role. It can effectively prevent current leakage and ensure the safe operation of the cable. The electromagnetic shielding layer 4 is located outside the insulating layer 6 and is mainly used to suppress electromagnetic interference. The waterproof layer 3 and the chemical erosion protection sheath 2 are designed to cope with harsh working environments. The waterproof layer 3 can prevent moisture from invading the interior of the cable and prevent the electrical performance from deteriorating, while the chemical erosion protection sheath 2 is made of special materials and can resist the erosion of various chemical substances and protect the internal structure of the cable from damage. The outermost armor layer 1 is the protective shell of the cable, which mainly provides mechanical protection. It is usually made of metal or alloy materials and has high tensile strength and wear resistance. The design of the armor layer 1 can effectively resist the extrusion and impact of external mechanical forces and protect the internal structure of the cable from damage.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-smoke, halogen-free, low-toxicity, flame-retardant B1-level control cable, comprising an armor layer (1), characterized in that: The armor layer (1) is provided with an anti-chemical corrosion sheath (2) inside, the anti-chemical corrosion sheath (2) is provided with a waterproof layer (3) inside, the waterproof layer (3) is provided with an electromagnetic shielding layer (4) inside, the electromagnetic shielding layer (4) is provided with four conductors (5) inside, the conductors (5) are provided with an insulating layer (6) outside, and the insulating layer (6) is provided with a flame retardant filler (7) outside.

2. The low-smoke, halogen-free, low-toxicity, flame-retardant B1 class control cable according to claim 1, characterized in that: The armor layer (1) is made by continuously winding a stainless steel strip.

3. The low-smoke, halogen-free, low-toxicity, flame-retardant B1 class control cable according to claim 1, characterized in that: The chemical corrosion resistant sheath (2) is made of polytetrafluoroethylene material.

4. The low-smoke, halogen-free, low-toxicity, flame-retardant B1 class control cable according to claim 1, characterized in that: The waterproof layer (3) is made of LSZH material.

5. The low-smoke, halogen-free, low-toxicity, flame-retardant B1 class control cable according to claim 1, characterized in that: The electromagnetic shielding layer (4) is made by braiding copper wires.

6. The low-smoke, halogen-free, low-toxicity, flame-retardant B1 class control cable according to claim 1, characterized in that: The conductor (5) is made of high-purity electrolytic copper.

7. The low-smoke, halogen-free, low-toxicity, flame-retardant B1 class control cable according to claim 1, characterized in that: The insulating layer (6) is made of ethylene propylene rubber.

8. The low-smoke, halogen-free, low-toxicity, flame-retardant B1 class control cable according to claim 1, characterized in that: The flame retardant filler (7) is made of aluminum hydroxide.

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