High-temperature-resistant control cable for electric transfer vehicle

Abstract

The utility model discloses a high-temperature-resistant control cable for an electric transfer vehicle, which comprises a cable core, and aluminum silicate ceramic fiber ropes are filled in gaps of the cable core. A high-temperature-resistant high-strength alkali-free wax-free glass fiber tape is wrapped outside the cable core; a fire-resistant halogen-free flame-retardant polyolefin inner sheath is extruded outside the high-temperature-resistant high-strength alkali-free wax-free glass fiber tape, a high-temperature fire-resistant synthetic crystal insulating tape is lapped outside the fire-resistant halogen-free flame-retardant polyolefin inner sheath, and a second fluorocarbon resin nano coating is coated outside the high-temperature fire-resistant synthetic crystal insulating tape; a fluorocarbon resin nano coating is arranged outside the cable, a high-temperature-resistant basalt braided tube is arranged outside the fluorocarbon resin nano coating, a high-temperature-resistant factice aluminum-plastic composite belt is wrapped outside the high-temperature-resistant basalt braided tube, and a 150 DEG C halogen-free low-smoke irradiation polyolefin outer sheath is extruded outside the high-temperature-resistant factice aluminum-plastic composite belt, so that the use requirements in high-temperature and high-heat radiation environments are met; and the electric transfer trolley also has the advantages of fire prevention, corrosion resistance, aging resistance, high strength, impact resistance and the like, and provides powerful guarantee for safe operation of the electric transfer trolley.

Description

Technical Field

[0001] The utility model relates to the field of wire and cable, and specifically to a high-temperature resistant control cable for an electric transfer vehicle. Background Art

[0002] Electric transfer vehicles play a crucial role in modern industry and are widely used in various fields, including but not limited to heavy industry, light industry, manufacturing, metallurgy, medical, docks, and hazardous locations. Such vehicles not only need to have strong carrying capacity but also must be able to adapt to various complex and harsh working environments. Especially in places like steel mills with high temperatures and high heat radiation, the supporting cables of electric transfer vehicles face great challenges. These cables not only need to withstand extremely high temperatures but also need to have properties such as fire resistance and resistance to molten steel burning to ensure normal operation in extreme environments.

[0003] Traditional cable designs often struggle to meet these stringent requirements. In high-temperature environments, the insulating materials of cables are prone to aging and even burning, resulting in circuit short circuits or failures. In addition, extreme situations such as molten steel splashing in steel mills can also cause direct physical damage to the cables. Therefore, it is particularly important to develop a special high-temperature resistant control cable for the working environment of electric transfer vehicles. Content of the Utility Model

[0004] In order to solve the existing problems, the utility model provides a high-temperature resistant control cable for an electric transfer vehicle. The product structure has reliable protection, and the cable itself has good high-temperature resistance, corrosion resistance, aging resistance, and resistance to high-temperature object sputtering in outdoor special environments, and is suitable for high-temperature and harsh wiring environments.

[0005] To achieve the above object, the utility model provides the following technical solution: A high-temperature resistant control cable for an electric transfer vehicle, including a cable core, wherein the cable core is stranded by multiple high-temperature resistant insulated wire cores; a first fluorocarbon resin nano-coating is coated on each high-temperature resistant insulated wire core; a silicon aluminum ceramic fiber rope is filled in the voids of the cable core; a high-temperature resistant high-strength alkali-free and wax-free glass fiber tape is wound around the cable core to tighten the cable core; a fire-resistant halogen-free flame-retardant polyolefin inner sheath is extruded outside the high-temperature resistant high-strength alkali-free and wax-free glass fiber tape, a high-temperature fire-resistant synthetic crystal insulating tape is wound outside the fire-resistant halogen-free flame-retardant polyolefin inner sheath, a second fluorocarbon resin nano-coating is coated on the high-temperature fire-resistant synthetic crystal insulating tape, a high-temperature resistant basalt braided tube is provided outside the fluorocarbon resin nano-coating, a high-temperature resistant oil paste aluminum-plastic composite tape is wound outside the high-temperature resistant basalt braided tube, a 150°C halogen-free low-smoke irradiated polyolefin outer sheath is extruded outside the high-temperature resistant oil paste aluminum-plastic composite tape, and a high-temperature resistant paint layer is coated on the 150°C halogen-free low-smoke irradiated polyolefin outer sheath.

[0006] Preferably, the high-temperature resistant insulated core comprises a copper conductor, a semi-conductive shielding layer extruded over a 105°C oil-resistant, halogen-free, flame-retardant irradiated insulation layer, and a high-temperature resistant tape coated with shaped magnesium oxide wrapped around the semi-conductive shielding layer.

[0007] Preferably, the outer surface of the copper conductor is coated with an alumina ceramic coating.

[0008] Preferably, an aramid fiber woven mesh is provided between the high-temperature resistant grease aluminum-plastic composite tape and the 150°C halogen-free low-smoke irradiated polyolefin sheath.

[0009] Preferably, the thickness ratio of the fire-resistant, halogen-free, flame-retardant polyolefin inner sheath to the 150°C halogen-free, low-smoke irradiated polyolefin outer sheath is 1:1.5-2.

[0010] Preferably, the cable core is equipped with an optical fiber temperature sensor.

[0011] Preferably, the thickness ratio of the first fluorocarbon resin nanocoating to the second fluorocarbon resin nanocoating is 2:1.5.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. Excellent high temperature resistance: By using multiple layers of high temperature resistant materials such as high temperature resistant insulated core, fluorocarbon resin nano-coating, high temperature refractory synthetic crystal insulation tape and high temperature resistant basalt braided tube, the cable can maintain stable electrical performance at extremely high temperatures and is not easy to age or burn.

[0014] 2. Strong fire resistance: The use of materials such as fire-resistant halogen-free flame-retardant polyolefin inner sheath and 150℃ halogen-free low-smoke irradiated polyolefin outer sheath enables the cable to quickly form a dense ceramic-like shell under extreme conditions such as fire, isolating flames and heat from intrusion and protecting the integrity of the internal cable structure.

[0015] 3. Excellent corrosion and aging resistance: The multi-layer design of the cable, such as fluorocarbon resin nano-coating and alumina ceramic coating, can resist the corrosion of acids, alkalis, salts and organic solvents, thus extending the service life of the cable.

[0016] 4. High strength and impact resistance: The addition of materials such as aluminosilicate ceramic fiber rope, high-temperature resistant, high-strength, alkali-free and wax-free glass fiber tape, and aramid fiber woven mesh enhances the mechanical strength of the cable, enabling it to withstand greater tensile and impact forces.

[0017] 5. Environmental protection and safety: The cable produces low smoke concentration when burning and does not release toxic gases such as hydrogen halides, meeting environmental protection requirements and reducing secondary damage in a fire.

[0018] 6. Real-time monitoring and early warning: By installing fiber optic temperature sensors inside the cable core, the cable temperature can be detected in real time, and potential faults can be detected and warned in a timely manner to ensure the safe operation of the electric transfer vehicle.

[0019] In summary, the high-temperature resistant control cable for electric transfer vehicles provided by this utility model not only meets the requirements for use in high-temperature and high-heat radiation environments, but also has multiple advantages such as fire resistance, corrosion resistance, aging resistance, high strength, and impact resistance, providing a strong guarantee for the safe operation of electric transfer vehicles. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the present invention that includes a high-temperature resistant paint layer;

[0022] Figure 3 This is a schematic diagram of the structure of the present invention, which includes an aramid fiber woven mesh. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-3 This utility model provides an embodiment of a high-temperature resistant control cable for electric transfer vehicles, comprising a cable core, which is composed of multiple high-temperature resistant insulated cores twisted together; the gaps in the cable core are filled with aluminosilicate ceramic fiber rope 7, and the cable core is wrapped with high-temperature resistant, high-strength, alkali-free, and wax-free glass fiber tape 8 and tied tightly. The aluminosilicate ceramic fiber rope, as a filling material, has excellent high-temperature strength, electrical insulation performance, low thermal conductivity, and excellent tensile strength. Combined with the high-temperature resistant, high-strength, alkali-free, and wax-free glass fiber tape to protect the cable core, it can be used stably for a long time in the range of -70℃ to 1000℃, and can withstand instantaneous high-temperature impact, making it suitable for extreme high-temperature scenarios such as steel mills and chemical plants.

[0025] The cable features a high-temperature, high-strength, alkali-free, wax-free glass fiber tape overlaid with a fire-resistant, halogen-free, flame-retardant polyolefin inner sheath 9. Under flame or high-temperature conditions (such as fire), the sheath material rapidly forms a dense ceramic-like shell, isolating flame and heat intrusion, protecting the integrity of the internal cable structure, and ensuring the line maintains its function even in extreme environments. It exhibits strong resistance to acids, alkalis, oils, and other media, making it suitable for complex environments such as chemical plants and ships, maintaining its protective function over a long period. A high-temperature fire-resistant synthetic crystalline insulation tape 10 is wrapped around the fire-resistant, halogen-free, flame-retardant polyolefin inner sheath to further improve the cable's high-temperature resistance. A second fluorocarbon resin nano-coating 11 is applied to the outside of the high-temperature fire-resistant synthetic crystalline insulation tape, and a high-temperature resistant coating is provided outside the fluorocarbon resin nano-coating. The basalt braided tubing 12 possesses excellent high strength, corrosion resistance, electrical insulation, and thermal insulation properties, effectively isolating it from impact damage from external high-temperature objects. A high-temperature resistant grease aluminum-plastic composite tape 13 is wrapped around the high-temperature resistant basalt braided tubing; the dense structure of the grease and aluminum-plastic composite tape resists molten steel splashes or molten metal penetration. A 150℃ halogen-free, low-smoke irradiated polyolefin outer sheath 14 is extruded over the high-temperature grease aluminum-plastic composite tape. Through irradiation crosslinking technology, the polyolefin molecular chains form a three-dimensional network structure, increasing the temperature resistance from the traditional 70℃ to 150℃, enabling long-term tolerance to high-temperature environments. After irradiation crosslinking, the material's hardness increases, tensile strength improves by 30%, and wear resistance is enhanced, making it suitable for frequent movement or mechanical stress scenarios.

[0026] In this embodiment, based on the above structure, a high-temperature resistant paint layer 15 is applied to the outer sheath of the halogen-free low-smoke irradiated polyolefin at 150°C, which can withstand the impact of instantaneous molten steel splashes and better protect the outer sheath.

[0027] In this embodiment, the high-temperature resistant insulated core includes a copper conductor 1, with a 105℃ oil-resistant, halogen-free, flame-retardant, radiation-extruded insulation layer 3 extruded over the copper conductor. Using radiation cross-linking technology, the material's molecular structure transforms from linear to a three-dimensional network, increasing the temperature resistance to 105℃ and above. The current-carrying capacity is increased by 15-50% compared to cables of the same specification, reducing the risk of line overload. This characteristic allows it to withstand high-temperature environments for extended periods, slowing down insulation aging while maintaining stable electrical performance. During combustion, the smoke concentration is low, and it does not release toxic gases such as hydrogen halides, effectively reducing secondary damage in a fire. This is because the use of hydroxides is avoided. As a flame retardant, it can prevent the decrease in insulation resistance caused by pre-crosslinking and moisture absorption, thereby ensuring the insulation resistance value and guaranteeing long-term stable power supply. The material enhances surface density through irradiation crosslinking process, making it resistant to corrosion from oils, acids, alkalis, and other corrosive media, suitable for oily environments or chemical scenarios. A semi-conductive shielding layer 4 is extruded outside the 105℃ oil-resistant halogen-free flame-retardant irradiated insulation layer. The semi-conductive shielding layer provides secondary protection for the conductor while protecting it based on the 105℃ oil-resistant halogen-free flame-retardant irradiated insulation layer, such as electromagnetic interference shielding, uniform electric field distribution, and reduced leakage current, ensuring the stability of power transmission.

[0028] To further optimize this technical solution, a high-temperature resistant magnesium oxide coating is wrapped around the semi-conductive shielding layer. Magnesium oxide has a melting point as high as 2800℃, and the coating can withstand continuous high temperatures (long-term operating temperature ≤180℃, short-term instantaneous temperature up to 1200℃). In addition, magnesium oxide itself is non-flammable, and the coating rapidly carbonizes upon contact with fire to form a ceramic protective layer, blocking oxygen from contacting combustibles. Furthermore, it has passed the GB / T 18380.12-2020 test, with an oxygen index ≥32%, low smoke density, and no release of toxic gases, meeting the Class A fire protection standard and being more environmentally friendly.

[0029] To further optimize this technical solution, a first fluorocarbon resin nano-coating 6 is coated on the outside of each high-temperature resistant insulated wire core. This coating can withstand long-term high temperatures of 250°C and short-term temperatures of up to 500°C. The nanoparticles fill the micropores of the coating, forming a dense barrier that can resist the corrosion of acids, alkalis, salts, and organic solvents. This results in high surface hardness, impact resistance, bending resistance, and good wear resistance of the high-temperature resistant insulated wire core, exhibiting excellent physical and mechanical properties. Combined with a second fluorocarbon resin nano-coating, this forms both internal and external protection.

[0030] To better protect the conductor, an alumina ceramic coating is applied to the outer surface of the copper conductor. Firstly, this coating inhibits copper oxidation and prevents electrolytic corrosion. Copper readily oxidizes at room temperature to form Cu2O, increasing contact resistance (the resistivity of bare copper increases 10-20 times after oxidation). The alumina coating isolates the conductor from air, extending its oxidation resistance lifespan in humid and hot environments (humidity >80%) from a few months to over 20 years. Secondly, in a DC electric field, bare copper, acting as the anode, corrodes more rapidly; the coating blocks electrolyte penetration, making it suitable for humid and salty environments. Finally, it is heat-resistant, with a melting point of 2072℃, a long-term operating temperature of up to 1600℃, and short-term tolerance to temperatures above 2500℃.

[0031] To further optimize this technical solution, an aramid fiber woven mesh 16 is provided between the high-temperature resistant grease aluminum-plastic composite tape and the 150℃ halogen-free low-smoke irradiated polyolefin sheath, which can absorb vibration and bending stress during vehicle operation.

[0032] To better detect the temperature of the cable, an optical fiber temperature sensor 17 is installed inside the cable core, which can detect the temperature of the cable core in real time. This is not only for fault early warning, but also for optimizing operation and maintenance strategies through data-driven approaches.

[0033] To further optimize this technical solution, the thickness ratio of the fire-resistant halogen-free flame-retardant polyolefin inner sheath to the 150℃ halogen-free low-smoke irradiated polyolefin outer sheath is 1:1.5-2; the thickness ratio of the first fluorocarbon resin nano-coating to the second fluorocarbon resin nano-coating is 2:1.5.

[0034] In summary, the high-temperature resistant control cable for electric transfer vehicles provided by this utility model not only meets the requirements for use in high-temperature and high-heat radiation environments, but also has multiple advantages such as fire resistance, corrosion resistance, aging resistance, high strength, and impact resistance, providing a strong guarantee for the safe operation of electric transfer vehicles.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-temperature resistant control cable for an electric transfer vehicle, comprising a cable core, characterized in that: The cable core is composed of multiple high-temperature resistant insulated cores twisted together; a first fluorocarbon resin nano-coating is applied to the outside of each high-temperature resistant insulated core; aluminum silicate ceramic fiber rope is filled into the gaps in the cable core; a high-temperature resistant, high-strength, alkali-free, wax-free glass fiber tape is wrapped around the cable core and secured; a fire-resistant, halogen-free, flame-retardant polyolefin inner sheath is extruded over the high-temperature resistant, high-strength, alkali-free, wax-free glass fiber tape; a high-temperature resistant synthetic crystal insulating tape is wrapped around the fire-resistant, halogen-free, flame-retardant polyolefin inner sheath; a second fluorocarbon resin nano-coating is applied over the high-temperature resistant, halogen-free, low-smoke irradiated polyolefin; a high-temperature resistant basalt braided tube is provided outside the fluorocarbon resin nano-coating; a high-temperature resistant grease aluminum-plastic composite tape is wrapped around the high-temperature resistant grease aluminum-plastic composite tape; a 150℃ halogen-free, low-smoke irradiated polyolefin outer sheath is extruded over the high-temperature resistant grease aluminum-plastic composite tape; and a high-temperature resistant paint layer is applied to the 150℃ halogen-free, low-smoke irradiated polyolefin outer sheath.

2. The high-temperature resistant control cable for an electric transfer vehicle according to claim 1, characterized in that: The high-temperature resistant insulated core includes a copper conductor, an oil-resistant, halogen-free, flame-retardant, and irradiated insulation layer extruded over the copper conductor, a semi-conductive shielding layer extruded over the oil-resistant, halogen-free, flame-retardant, and irradiated insulation layer at 105°C, and a high-temperature resistant tape coated with plastic-molded magnesium oxide wrapped around the semi-conductive shielding layer.

3. The high-temperature resistant control cable for an electric transfer vehicle according to claim 2, characterized in that: The outer surface of the copper conductor is coated with an alumina ceramic coating.

4. The high-temperature resistant control cable for an electric transfer vehicle according to claim 1, characterized in that: An aramid fiber woven mesh is provided between the high-temperature resistant grease aluminum-plastic composite tape and the 150℃ halogen-free low-smoke irradiated polyolefin sheath.

5. The high-temperature resistant control cable for an electric transfer vehicle according to claim 1, characterized in that: The thickness ratio of the inner halogen-free flame-retardant polyolefin sheath to the outer halogen-free low-smoke irradiated polyolefin sheath at 150℃ is 1:1.5-2.

6. The high-temperature resistant control cable for an electric transfer vehicle according to claim 1, characterized in that: The cable core is equipped with an optical fiber temperature sensor.

7. The high-temperature resistant control cable for an electric transfer vehicle according to claim 1, characterized in that: The thickness ratio of the first fluorocarbon resin nanocoating to the second fluorocarbon resin nanocoating is 2:1.5.

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