Process cable with multi-layer protection structure

Abstract

The utility model relates to the technical field of cable equipment, in particular to a process cable with a multi-layer protection structure, which comprises a cable core, the cable core is formed by twisting a plurality of leads, the surface of each lead is coated with an inner insulating layer, the outer side of the cable core is coated with an aluminum foil shielding layer, the surface of the aluminum foil shielding layer is provided with a mechanical protection layer, and the surface of the mechanical protection layer is coated with an outer insulating layer. An outer insulation layer is arranged outside the mechanical protection layer, an armor layer is arranged outside the outer insulation layer in a sleeving mode, and a connector wrapping shell is installed on the outer side of a connector at one end of the cable core. According to the technical cable with the multi-layer protection structure, the outer side of the cable core is wrapped by the aluminum foil shielding layer, external electromagnetic interference can be effectively shielded, attenuation and distortion of signals in the transmission process are reduced, accuracy and stability of data transmission are ensured, risks of equipment faults and data loss are reduced, and the technical cable is particularly suitable for high-frequency signal transmission scenes. And the mechanical protection layer is formed by weaving tinned copper metal wires, so that good mechanical protection is provided for the cable core.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable equipment technical field, concretely relates to a process cable of multilayer protection structure. BACKGROUND

[0002] With the rapid development of electronic information technology, power transmission technology and communication technology, as the key carrier of data transmission, power supply and signal transmission, the application range of cable is increasingly wide, covering many fields such as industrial control, aerospace, transportation, building electrical, new energy development. However, different application scenarios put forward diversified strict requirements on the performance of cable, and traditional cable gradually exposes many performance short boards when coping with complex and changeable use environment.

[0003] In the field of signal transmission, especially in high-frequency signal transmission scenarios, the influence of external electromagnetic interference on signal quality is increasingly significant. Traditional cable lacks effective electromagnetic shielding measures, which leads to signal interference by external electromagnetic field during transmission, resulting in signal attenuation, distortion and other problems, which seriously affects the accuracy and stability of data transmission, and may cause equipment failure or data loss and other serious consequences.

[0004] In terms of mechanical protection, the structural design of traditional cable is relatively simple, and its tensile, extrusion and bending resistance is limited. In the environment with high mechanical stress such as industrial production site and construction site, the cable is frequently subjected to external force pulling, extrusion or bending, which can easily cause damage to the outer skin of the cable and breakage of the internal wires, affecting the normal use of the cable and causing safety hazards.

[0005] Waterproof performance is also a weak link of traditional cable. In humid environment, underwater operation or places with risk of liquid leakage, water can easily penetrate into the cable, causing problems such as degradation of cable insulation performance and short circuit, greatly shortening the service life of the cable and increasing the maintenance cost.

[0006] In addition, in terms of aging resistance, the materials used in traditional cable are easily affected by ultraviolet rays, high temperature, chemicals and other factors during long-term use, resulting in material aging, cracking and hardening, which further weakens the protection performance of the cable.

[0007] Although some improved cables in the prior art improve the performance in some aspects to some extent, they are difficult to achieve overall optimization in waterproof, mechanical protection, electromagnetic shielding and aging resistance. For example, some cables use a single armored structure to enhance the mechanical protection capability, which increases the weight and volume of the cable and reduces the flexibility of the cable, which is not conducive to the laying and installation of the cable. Some cables increase the thickness of the insulation layer to improve the waterproof performance, but may cause poor heat dissipation performance of the cable, affecting the current-carrying capacity of the cable. Utility model content

[0008] The utility model discloses a kind of process cables of multi-layer protection structure, to solve the problem that traditional cable lacks effective electromagnetic shielding measures in the background technology proposed above, signal is susceptible to external electromagnetic field interference in transmission process, signal attenuation, distortion and other problems are generated, seriously affect the accuracy and stability of data transmission, and then possibly cause equipment failure or data loss Serious consequences problem.

[0009] To achieve the above object, the utility model provides a kind of process cables of multi-layer protection structure, including cable core, the cable core is stranded by multiple wires, the surface of wire is covered with inner insulating layer, the cable core outside is wrapped by aluminum foil shielding layer, the surface of aluminum foil shielding layer is provided with mechanical protection layer, the outside of mechanical protection layer is provided with outer insulating layer, the outer insulating layer is provided with armored layer, the outside of cable core one end joint is installed with joint wrapping shell.

[0010] As preferred, wire uses oxygen-free copper metal material, to ensure good conductivity.

[0011] As preferred, the inner insulating layer is made of polyvinyl chloride insulating material, which can effectively prevent short circuit between wires.

[0012] As preferred, the mechanical protection layer is woven with tinned copper wire, which provides good mechanical protection for the cable core and enhances the tensile and extrusion resistance of the cable core.

[0013] As preferred, the outer insulating layer is made of polyurethane reactive hot melt adhesive material, which is tightly attached to the outside of the cable core through injection molding process, forming a uniform waterproof sealing layer, effectively preventing moisture from entering the cable, and improving the aging resistance of the cable.

[0014] As preferred, the armored layer is made of 304 stainless steel metal corrugated hose, which covers the outer insulating layer in a sheath manner, providing mechanical protection for the cable and enhancing the tensile and extrusion resistance of the cable.

[0015] As preferred, the inside of the joint wrapping shell is filled with polyurethane reactive hot melt adhesive material.

[0016] As preferred, the number of wires in one cable core is 20, with a single diameter of 0.1mm, the thickness of the inner insulating layer is 0.25mm, the outer diameter of the armored layer is 8mm, and the inner diameter is 5.3mm.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] In the process cable of the multi-layer protection structure, the outside of the cable core is wrapped by an aluminum foil shielding layer, which can effectively shield external electromagnetic interference, reduce signal attenuation and distortion during transmission, ensure the accuracy and stability of data transmission, reduce the risk of equipment failure and data loss, and is especially suitable for high-frequency signal transmission scenarios.

[0019] The mechanical protection layer is woven by tin-plated copper wires, which provides good mechanical protection for the cable core and significantly enhances the tensile and extrusion resistance of the cable core.

[0020] The armored layer is made of 304 stainless steel metal corrugated hose, which covers the outer insulation layer in a sheath manner, further providing mechanical protection for the cable, enabling the cable to withstand frequent external force pulling, extrusion or bending in environments with high mechanical stress such as industrial production sites and construction sites, effectively preventing cable skin damage, internal wire breakage, and other issues, ensuring normal use of the cable and eliminating safety hazards.

[0021] The outer insulation layer is made of polyurethane reactive hot melt adhesive material, which is tightly attached to the outside of the cable core through injection molding process, forming a uniform waterproof sealing layer that can effectively prevent moisture from entering the cable, avoiding problems such as cable insulation performance degradation and short circuit caused by moisture penetration, greatly extending the service life of the cable and reducing maintenance costs.

[0022] The outer insulation layer is made of polyurethane reactive hot melt adhesive material, which not only has good waterproof performance but also improves the cable's aging resistance, making the cable less susceptible to factors such as ultraviolet light, high temperature, and chemicals during long-term use, reducing material aging, cracking, and hardening, and maintaining the stability of the cable's protective performance.

[0023] A joint wrapping shell is installed outside the joint at one end of the cable core, and the joint wrapping shell is filled with polyurethane reactive hot melt adhesive material, further enhancing the waterproof, insulation, and protection performance of the joint, ensuring the reliability of the joint connection, and reducing cable failures caused by joint problems.

[0024] The multi-layer protection structure of the utility model improves the key performance of cable waterproofing, mechanical protection, electromagnetic shielding, and aging resistance, while avoiding the negative effects of simply increasing the thickness of a single layer by selecting appropriate materials and structural design. For example, by using appropriate materials and structures, the cable's flexibility is maintained while ensuring its protective performance, making it easier to lay and install, and suitable for use in various complex environments. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 The utility model's overall structure is shown in the figure.

[0026] Fig. 2It is the internal structure schematic view of the cable core in the utility model;

[0027] Fig. 3 It is the structure schematic view of the mechanical protection layer in the utility model;

[0028] The meaning of each mark in the figure is:

[0029] 1, cable core;12, inner insulation layer;13, aluminum foil shielding layer;14, mechanical protection layer;15, outer insulation layer;16, armored layer;2, joint wrapping shell. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] The utility model provides a kind of process cable of multi-layer protection structure, as shown in Figs. 1-3 It is shown, including cable core 1, cable core 1 is stranded by multiple wires, the surface of wire is covered with inner insulation layer 12, cable core 1 outside is wrapped by aluminum foil shielding layer 13, the surface of aluminum foil shielding layer 13 is provided with mechanical protection layer 14, the outside of mechanical protection layer 14 is provided with outer insulation layer 15, the outside of outer insulation layer 15 is provided with armored layer 16, and the outside of the joint of one end of cable core 1 is installed with joint wrapping shell 2. By the design of multi-layer protection structure, inner insulation layer 12, aluminum foil shielding layer 13, mechanical protection layer 14, outer insulation layer 15 and armored layer 16 are sequentially arranged from inside to outside, and each layer cooperates with each other to provide comprehensive protection for cable core 1. This multi-layer structure can comprehensively improve the insulation performance, electromagnetic shielding performance, mechanical protection performance and waterproof performance of cable, effectively prolong the service life of cable, and ensure the stable operation of cable in complex environment. The setting of joint wrapping shell 2 further enhances the protection of joint, and improves the overall reliability of cable.

[0032] In the embodiment, wire uses oxygen-free copper metal material to ensure good conductivity. Oxygen-free copper metal material has excellent conductivity, and using the material as wire can reduce the resistance of cable, reduce energy loss in signal transmission process, improve the transmission efficiency of cable, and ensure stable transmission of data and power.

[0033] Specifically, the inner insulation layer 12 is made of polyvinyl chloride insulation material, which can effectively prevent short circuit between the conductors. The polyvinyl chloride insulation material has good insulation performance, which can effectively isolate each conductor and prevent short circuit between the conductors due to contact, ensuring the safe operation of the cable. At the same time, the material also has certain mechanical strength and chemical corrosion resistance, which can adapt to different use environments.

[0034] Further, the mechanical protection layer 14 is woven with tin-plated copper wire, which provides good mechanical protection for the cable core 1 and enhances the tensile and extrusion resistance of the cable core 1. The mechanical protection layer 14 woven with tin-plated copper wire has high strength and toughness, which can withstand certain external tensile and extrusion forces, providing reliable mechanical protection for the cable core 1. During installation and use, it can effectively prevent the cable core 1 from being damaged, ensuring the integrity of the internal structure and transmission performance of the cable.

[0035] Further, the outer insulation layer 15 is made of polyurethane reactive hot melt adhesive material, which is tightly attached to the outside of the cable core 1 through injection molding process to form a uniform waterproof sealing layer, effectively preventing water from entering the inside of the cable and improving the aging resistance of the cable. The polyurethane reactive hot melt adhesive material has good waterproof performance and aging resistance, which is tightly attached to the outside of the cable core 1 through injection molding process to form a uniform waterproof sealing layer, which can effectively prevent water, moisture and other factors from entering the inside of the cable, avoiding problems such as insulation performance degradation and short circuit caused by water intrusion. At the same time, the material can also resist the influence of ultraviolet rays, high temperature, chemicals and other factors, prolonging the service life of the cable.

[0036] Further, the armored layer 16 is made of 304 stainless steel metal corrugated hose, which covers the outer insulation layer 15 in the form of a sheath to provide mechanical protection for the cable and enhance the tensile and extrusion resistance of the cable. The 304 stainless steel metal corrugated hose has high strength, corrosion resistance and good flexibility, which covers the outer insulation layer 15 in the form of a sheath to further enhance the mechanical protection capability of the cable. When subjected to a large external force, the corrugated hose can absorb energy through its elastic deformation, reducing damage to the cable core 1 and improving the tensile and extrusion resistance of the cable, allowing the cable to operate safely in harsh mechanical environments.

[0037] Further, the inside of the joint wrapping shell 2 is filled with polyurethane reactive hot melt adhesive material. Filling the joint wrapping shell 2 with polyurethane reactive hot melt adhesive material can enhance the sealing and insulation of the joint. The material can fill the gaps in the joint to prevent water, dust and other factors from entering the inside of the joint, avoiding problems such as poor contact or short circuit caused by moisture and oxidation, and improving the reliability and stability of the joint.

[0038] Further, the number of wires of one cable core 1 is 20, the diameter of single wire is 0.1mm, the thickness of inner insulation layer 12 is 0.25mm, the outer diameter of armored layer 16 is 8mm, and the inner diameter is 5.3mm. The reasonable design of these parameters makes the cable have appropriate size and weight under the premise of ensuring transmission performance and protection performance, which is convenient for installation and use. For example, appropriate wire number and diameter can meet the specific transmission capacity requirement; appropriate inner insulation layer thickness can ensure good insulation effect; and reasonable armored layer size can ensure the mechanical strength and flexibility of the cable.

[0039] When the process cable with the multi-layer protection structure is used, firstly, when the cable transmits signals or power, the current flows in the wires. The inner insulation layer 12 always isolates the wires from each other to avoid short circuit caused by mutual contact of the wires. In various complex environments, such as high temperature, humidity, chemical substance corrosion, etc., the polyvinyl chloride material maintains stable insulation performance by virtue of its own characteristics, ensuring the continuous safe operation of the cable. When there is an electromagnetic interference source outside, the aluminum foil shielding layer 13 forms an electromagnetic shielding field, which reflects, absorbs or guides the interference electromagnetic waves to other directions to avoid interference with the signals in the wires in the cable core 1. Similarly, when the signals in the cable core 1 radiate outward, the aluminum foil shielding layer 13 also blocks them to reduce signal leakage. During the installation and use of the cable, when subjected to external force stretching or extrusion, the mechanical protection layer 14 of the tinned copper wire braid can withstand the external force, absorb part of the energy through its own structural deformation, disperse the external force, reduce the direct action on the cable core 1, thereby protecting the integrity of the internal structure and the transmission performance of the cable core 1 from being damaged. When the cable is in a humid environment or contacts water, the waterproof sealing layer of the outer insulation layer 15 prevents water from penetrating into the inside of the cable, avoiding problems such as insulation performance degradation and short circuit caused by water intrusion.

[0040] In the long-term use process, the polyurethane reactive hot melt adhesive material can resist ultraviolet radiation, high temperature oxidation and chemical substance corrosion, maintain stable performance, and continuously provide protection for the cable. When the cable is subjected to strong external force impact, extrusion or bending, the 304 stainless steel corrugated hose will elastically deform to absorb and disperse the external force energy, avoid the direct action of the external force on the cable core 1, and protect the internal structure of the cable core 1 from being damaged. At the same time, the 304 stainless steel material has good corrosion resistance and can be used in harsh environments for a long time, providing reliable mechanical protection for the cable. At the joint, the polyurethane reactive hot melt adhesive material fills the gap inside the joint wrapping shell 2 to prevent water, dust, etc. from entering the inside of the joint. Avoiding problems such as poor contact or short circuit caused by moisture, oxidation, etc. in the joint, improving the reliability and stability of the joint, and ensuring the normal signal transmission and power connection of the cable at the joint.

[0041] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A process cable for a multi-layered protective structure comprising a cable core (1), characterized in that: The cable core (1) is twisted by a plurality of wires, the surface of the wire is covered with an inner insulation layer (12), the outer side of the cable core (1) is wrapped by an aluminum foil shielding layer (13), the surface of the aluminum foil shielding layer (13) is provided with a mechanical protection layer (14), the outer side of the mechanical protection layer (14) is provided with an outer insulation layer (15), the outer side of the outer insulation layer (15) is sleeved with an armored layer (16), and the outer side of the one end joint of the cable core (1) is provided with a joint wrapping shell (2).

2. The process cable of the multi-layered shielded structure according to claim 1, characterized in that: The wire is made of oxygen-free copper metal material.

3. The process cable for multi-layered shielding structures of claim 1, wherein: The inner insulation layer (12) is made of polyvinyl chloride insulation material.

4. The process cable for multi-layer shielding structures of claim 1, wherein: The mechanical protection layer (14) is woven by tinned copper wire.

5. The process cable for multi-layered shielding structures of claim 1, wherein: The outer insulation layer (15) is made of polyurethane reactive hot melt adhesive material, and the outer insulation layer (15) is tightly attached to the outer side of the cable core (1) by injection molding process.

6. The process cable for multi-layer shielding structures of claim 1, wherein: The armored layer (16) is made of 304 stainless steel metal corrugated hose, and the 304 stainless steel metal corrugated hose is covered on the outer insulation layer (15) in the form of sheath to provide mechanical protection for the cable.

7. The process cable for multi-layer shielding structures of claim 1, wherein: The inside of the joint wrapping shell (2) is filled with polyurethane reactive hot melt adhesive material.

8. The process cable for multi-layer shielding structures of claim 1, wherein: The number of wires of one cable core (1) is 20, the diameter of a single wire is 0.1mm, the thickness of the inner insulation layer (12) is 0.25mm, the outer diameter of the armored layer (16) is 8mm, and the inner diameter is 5.3mm.

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