Fireproof cable with corrugated copper sheath

Abstract

The utility model relates to a corrugated copper sheath fireproof cable which comprises an external copper sheath, a fireproof layer arranged in the external copper sheath, an internal copper sheath arranged in the fireproof layer, a heat insulation layer arranged in the internal copper sheath, a wrapping layer arranged in the heat insulation layer, and cables arranged in the wrapping layer at equal intervals. A filling layer is arranged in the wrapping layer and located on the outer side of the cable, protrusions of threaded structures are arranged on the outer copper sheath and the inner copper sheath, and the outer copper sheath and the inner copper sheath are arranged in a staggered structure. According to the utility model, the external copper sheath and the internal copper sheath are arranged, so that the toughness and durability of the cable can be obviously enhanced. Besides, the projections of the threaded structures on the two copper sheaths are arranged in a staggered manner, so that the diameter of the cable can be reduced, the problem that the protection effect of the spiral copper sheaths at the recesses is weak can be solved, and the overall protection performance of the cable is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a corrugated copper sheath fireproof cable. Background Art

[0002] Corrugated copper sheath cables are widely used in power transmission in various harsh environments due to their excellent electrical conductivity, thermal conductivity, and corrosion resistance. The design features of this type of cable endow it with high mechanical strength and flexibility, enabling it to operate reliably under complex working conditions such as high temperature, high humidity, and underground construction. In addition, the corrugated copper sheath can effectively shield electromagnetic interference, ensuring the stability of the signals and power transmitted by the cable.

[0003] However, in actual use, there are certain problems with existing corrugated copper sheath cables. Specifically, due to their design structure, the concave parts of the corrugated sheath become relatively weak positions in cable protection. Under the impact, abrasion, or extrusion of external forces, the concave parts are prone to being damaged first. Considering that this type of cable is often used in harsh environments such as underground construction, high-temperature and high-humidity industrial environments, or areas with strong electromagnetic interference, once the outer copper sheath is damaged at the concave part, the overall protection ability of the cable will be significantly reduced. This will not only expose the internal cables and insulation layers to the external environment, leading to further damage, but may also trigger safety accidents, seriously affecting the reliability and safety of power transmission.

[0004] Based on this, those skilled in the art have proposed a corrugated copper sheath fireproof cable. Content of the Utility Model

[0005] In view of the above problems existing in the prior art, the main purpose of the present utility model is to provide a corrugated copper sheath fireproof cable.

[0006] The technical solution of the present utility model is as follows: A corrugated copper sheath fireproof cable includes an external copper sheath, a fireproof layer is arranged inside the external copper sheath, an internal copper sheath is arranged inside the fireproof layer, a heat insulation layer is arranged inside the internal copper sheath, a wrapping layer is arranged inside the heat insulation layer, cables are arranged at equal intervals inside the wrapping layer, a filling layer is arranged inside the wrapping layer and on the outer side of the cables, raised portions with a threaded structure are arranged on both the external copper sheath and the internal copper sheath, and the external copper sheath and the internal copper sheath are arranged in an alternating structure.

[0007] By the above technical means, by providing two copper sheaths, namely an external copper sheath and an internal copper sheath, the toughness of the cable can be enhanced. After one of the copper sheaths is worn or damaged, the other copper sheath can still keep the cable highly tough. Moreover, the patterns on the two copper sheaths are arranged in a staggered manner, which can not only reduce the diameter of the cable but also make up for the weak protection effect of the spiral copper sheath at the concave part.

[0008] As a preferred embodiment, both the external copper sheath and the internal copper sheath are made of electrolytic copper, and their thickness is set to 0.1 mm.

[0009] By the above technical means, electrolytic copper has excellent electrical conductivity and thermal conductivity, can effectively shield electromagnetic interference, and has superior corrosion resistance, being suitable for various harsh environments. The thickness of the electrolytic copper sheath is 0.1 mm, which not only ensures good mechanical strength but also does not increase the weight of the cable, facilitating installation and maintenance.

[0010] As a preferred embodiment, the fireproof layer is made of glass fiber, the density of glass fiber is 2.5 g / cm³, and the working temperature range is from -60°C to +700°C.

[0011] By the above technical means, glass fiber has excellent high-temperature resistance and mechanical strength, can remain stable in a high-temperature environment, does not burn or melt and drip, and has good heat insulation and fireproof effects. This setting can greatly improve the fireproof rating of the cable in actual use, ensuring that the cable can continue to operate during a fire and guaranteeing the continuity of power supply.

[0012] As a preferred embodiment, the heat insulation layer is made of aluminum silicate, the density of aluminum silicate is 3.2 g / cm³, and the working temperature range is from -80°C to +1000°C.

[0013] By the above technical means, aluminum silicate has extremely high heat resistance and excellent heat insulation effect, can effectively block the influence of external high temperature on the inside of the cable, and protect the stability of the internal conductor and insulation layer. In actual use, this setting can extend the service life of the cable, especially in high-temperature or fire environments, ensuring the continuous and stable operation of the cable.

[0014] As a preferred embodiment, the wrapping layer is made of polyvinyl chloride, the density of polyvinyl chloride is 1.4 g / cm³, and the working temperature range is from -20°C to +70°C.

[0015] Through the above technical means, polyvinyl chloride has good mechanical strength, chemical corrosion resistance and weather resistance, and can provide additional protection for the cable to prevent mechanical damage and environmental impact. This setting can improve the durability of the cable in actual use and is suitable for use in various complex environments, especially outdoors or in humid environments.

[0016] As a preferred embodiment, the filling layer is made of ethylene propylene rubber, the density of ethylene propylene rubber is 0.86 g / cm³, and the working temperature range is -50°C to +150°C.

[0017] Through the above technical means, ethylene propylene rubber has excellent flexibility, aging resistance and ozone resistance, and can maintain stable performance within a wide temperature range. This setting can improve the mechanical flexibility of the cable in actual use, prevent damage to the internal cable 6 caused by external forces or environmental changes, and at the same time its aging resistance can extend the service life of the cable.

[0018] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0019] The present utility model can significantly enhance the toughness and durability of the cable by providing two copper sheaths, namely an external copper sheath and an internal copper sheath. In actual use, even if the external copper sheath is worn or damaged, the internal copper sheath can still provide effective protection, enabling the cable as a whole to maintain high toughness and reliability. In addition, the protrusions of the thread structures on the two copper sheaths are arranged staggeredly. This design can not only reduce the diameter of the cable, but also make up for the weak protection effect of the spiral copper sheath at the recesses, thereby enhancing the overall protection performance of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the first isometric view of the present utility model.

[0021] Figure 2 is the second isometric view of the present utility model.

[0022] Figure 3 is the cross-sectional view of the present utility model.

[0023] Figure 4 is the schematic diagram of the wrapping material structure of the present utility model.

[0024] Legend: 1. External copper sheath; 2. Fireproof layer; 3. Internal copper sheath; 4. Heat insulation layer; 5. Wrapping layer; 6. Cable; 7. Filling layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments.

[0026] The following will further illustrate the present utility model with reference to the accompanying drawings and specific embodiments.

[0027] Embodiment

[0028] As Figures 1 - 4 shown, the present utility model provides a corrugated copper sheath fireproof cable, which includes an external copper sheath 1. A fireproof layer 2 is arranged inside the external copper sheath 1. An internal copper sheath 3 is arranged inside the fireproof layer 2. A heat insulation layer 4 is arranged inside the internal copper sheath 3. A wrapping layer 5 is arranged inside the heat insulation layer 4. Wires 6 are equidistantly arranged inside the wrapping layer 5. A filling layer 7 is arranged inside the wrapping layer 5 and outside the wires 6. Threaded protrusions are arranged on both the external copper sheath 1 and the internal copper sheath 3. The external copper sheath 1 and the internal copper sheath 3 are arranged in a staggered structure.

[0029] In summary: By providing two copper sheaths, namely the external copper sheath 1 and the internal copper sheath 3, while strengthening the toughness of the cable, after one of the copper sheaths is worn or damaged, the other copper sheath can still keep the cable with high toughness. Moreover, the patterns on the two copper sheaths are arranged in a staggered manner, which can not only reduce the diameter of the cable but also make up for the weak protection effect of the spiral copper sheath at the concave parts.

[0030] As Figures 1 - 4 shown, both the external copper sheath 1 and the internal copper sheath 3 are made of purple copper, and their thickness is set to 0.1 mm.

[0031] In summary: Purple copper has excellent electrical conductivity and thermal conductivity, can effectively shield electromagnetic interference, and has superior corrosion resistance, being suitable for various harsh environments. The thickness of the purple copper sheath is 0.1 mm, which not only ensures good mechanical strength but also does not increase the weight of the cable, facilitating installation and maintenance.

[0032] As Figures 1 - 4 shown, the fireproof layer 2 is made of glass fiber, the density of the glass fiber is 2.5 g / cm³, and the working temperature range is -60°C to +700°C.

[0033] In summary: Glass fiber has excellent high-temperature resistance and mechanical strength, can remain stable in a high-temperature environment, does not burn or melt and drip, and has good heat insulation and fireproof effects. This setting can greatly improve the fireproof grade of the cable in actual use, ensuring that the cable can continue to operate during a fire and guaranteeing the continuity of power supply.

[0034] As Figures 1 - 4 shown, the heat insulation layer 4 is made of aluminum silicate, with a density of 3.2 g / cm³ and a working temperature range of -80°C to +1000°C;

[0035] In summary: Aluminum silicate has extremely high heat resistance and excellent heat insulation effect, which can effectively block the influence of external high temperature on the inside of the cable and protect the stability of the internal conductor and insulation layer. In actual use, this setting can extend the service life of the cable, especially in high temperature or fire environments, and can ensure the continuous and stable operation of the cable.

[0036] As Figures 1 - 4 shown, the wrapping layer 5 is made of polyvinyl chloride, with a density of 1.4 g / cm³ and a working temperature range of -20°C to +70°C;

[0037] In summary: Polyvinyl chloride has good mechanical strength, chemical corrosion resistance and weather resistance, which can provide additional protection for the cable, prevent mechanical damage and environmental impact. This setting can improve the durability of the cable in actual use and is suitable for use in various complex environments, especially outdoors or in humid environments.

[0038] As Figures 1 - 4 shown, the filling layer 7 is made of ethylene propylene rubber, with a density of 0.86 g / cm³ and a working temperature range of -50°C to +150°C;

[0039] In summary: Ethylene propylene rubber has excellent flexibility, aging resistance and ozone resistance, and can maintain stable performance within a wide temperature range. This setting can improve the mechanical flexibility of the cable in actual use, prevent damage to the internal cable 6 caused by external force or environmental changes, and its aging resistance can extend the service life of the cable.

[0040] Working principle:

[0041] By setting two copper sheaths, namely the external copper sheath 1 and the internal copper sheath 3, the toughness and durability of the cable can be significantly enhanced. In actual use, even if the external copper sheath 1 is worn or damaged, the internal copper sheath 3 can still provide effective protection, making the cable as a whole maintain high toughness and reliability. In addition, the protrusions of the thread structures on the two copper sheaths are staggered. This design can not only reduce the diameter of the cable, but also make up for the weak protection effect of the spiral copper sheath at the concave part, thus enhancing the overall protection performance of the cable;

[0042] Both the outer copper sheath 1 and the inner copper sheath 3 are made of red copper. Red copper has excellent electrical conductivity, thermal conductivity and corrosion resistance, can effectively shield electromagnetic interference, and provide mechanical strength and durability. The fireproof layer 2 is made of fiberglass. Fiberglass has high-temperature stability, heat insulation and fireproof performance, which can improve the fireproof rating of the cable. The heat insulation layer 4 is made of aluminum silicate. Aluminum silicate provides excellent heat insulation effect to protect the internal components. The wrapping layer 5 is made of polyvinyl chloride. Polyvinyl chloride has mechanical strength, chemical corrosion resistance and weather resistance. The filling layer 7 is made of ethylene propylene rubber. Ethylene propylene rubber has flexibility, aging resistance and ozone resistance.

[0043] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A corrugated copper sheath fireproof cable, comprising an external copper sheath (1), characterized in that: Inside the external copper sheath (1), there is a fireproof layer (2). Inside the fireproof layer (2), there is an internal copper sheath (3). Inside the internal copper sheath (3), there is a heat insulation layer (4). Inside the heat insulation layer (4), there is a wrapping layer (5). Inside the wrapping layer (5), cables (6) are arranged at equal intervals. Inside the wrapping layer (5) and on the outer side of the cables (6), there is a filling layer (7). Both the external copper sheath (1) and the internal copper sheath (3) are provided with raised portions having a threaded structure, and the external copper sheath (1) and the internal copper sheath (3) are arranged in a staggered structure.

2. The fireproof cable with a corrugated copper sheath according to claim 1, wherein: Both the external copper sheath (1) and the internal copper sheath (3) are made of red copper, and their thickness is set to 0.1 mm.

3. The fireproof cable with a corrugated copper sheath according to claim 1, characterized in that: The fireproof layer (2) is made of fiberglass. The density of the fiberglass is 2.5 g / cm³, and the working temperature range is from -60°C to +700°C.

4. A corrugated copper sheath fire-resistant cable according to claim 1, characterized in that: The heat insulation layer (4) is made of aluminum silicate. The density of the aluminum silicate is 3.2 g / cm³, and the working temperature range is from -80°C to +1000°C.

5. A corrugated copper sheathed fireproof cable according to claim 1, characterized in that: The wrapping layer (5) is made of polyvinyl chloride. The density of the polyvinyl chloride is 1.4 g / cm³, and the working temperature range is from -20°C to +70°C.

6. The fireproof cable with a corrugated copper sheath according to claim 1, wherein: The filling layer (7) is made of ethylene propylene rubber. The density of the ethylene propylene rubber is 0.86 g / cm³, and the working temperature range is from -50°C to +150°C.

Images