A high-strength and high-temperature-resistant cable

Abstract

The present invention discloses a high-strength and high-temperature resistant cable, comprising an outer sheath, wherein an intermediate layer for conducting heat away from the cable is fixedly installed on the inner side of the outer sheath, a shielding layer for improving the shielding effect of the cable is fixedly installed on the inner side of the intermediate layer, a high-temperature resistant sheath is fixedly installed on the inner side of the shielding layer, at least one wire core is arranged inside the high-temperature resistant sheath, an insulating sheath is provided on the outer side of the wire core, and a first filling layer and a second filling layer are filled between two adjacent insulating sheaths; by adopting a special structural design in the shielding layer, placement cavities are opened equidistantly inside and filled with ferromagnetic fluid, and adjacent placement cavities are separated by reinforced support ribs, thereby achieving excellent dynamic shielding against electromagnetic interference of multiple frequencies, forming a compact structure of magnetic particles to enhance reflection and absorption capabilities at high frequencies, and adjusting the magnetic permeability to block interference at low frequencies, thereby ensuring accurate and stable signal transmission inside the cable and improving the anti-interference performance of the cable.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, in particular to a high-strength and high-temperature resistant cable. Background Art

[0002] High-temperature resistant cable is a type of cable that can work normally in high-temperature environments. It is usually used in industrial equipment that needs to withstand high temperatures, furnaces, heat treatment equipment, petrochemical industry, and other application scenarios in high-temperature environments. It plays an important role in petrochemical, metallurgy, thermoelectric and other fields. This type of cable needs to have high-temperature resistance, heat resistance, anti-aging, flame retardancy and other characteristics.

[0003] Existing high-strength and high-temperature resistant cables have the following problems when in use. First, an armor layer is set on the outside of the cable. The armor is generally woven or wound with metal materials such as steel belts and steel wires to provide mechanical protection for the cable, which is used to improve the strength of the cable, but it will cause the overall weight of the cable to be too heavy; second, in order to improve the anti-interference ability of the cable, a metal shielding layer is wrapped on the outside of the cable to protect the cable from interference. The metal shielding layer is not only heavy as a whole and has poor flexibility, but also in a low-frequency electromagnetic interference environment, the shielding effect of the metal material will be weakened due to the skin effect.

[0004] Therefore, a high-strength and high-temperature resistant cable is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a high-strength and high-temperature resistant cable to solve the problem in the above background technology that the metal shielding layer is not only heavy and has poor flexibility, but also has limited high-frequency shielding effect.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high-strength, high-temperature resistant cable, comprising an outer sheath, an intermediate layer for conducting cable heat out of the outer sheath being fixedly installed on the inner side thereof, a shielding layer for improving the cable shielding effect being fixedly installed on the inner side of the intermediate layer, a high-temperature resistant sheath being fixedly installed on the inner side of the shielding layer, at least one wire core being arranged inside the high-temperature resistant sheath, an insulating sheath being provided on the outer side of the wire core, and a first filling layer and a second filling layer being filled between two adjacent insulating sheaths.

[0007] Preferably, the outer covering layer comprises an outer sheath, an insertion hole is formed on the inner side of the outer sheath, and a reinforcing rib is inserted into the inner side of the insertion hole.

[0008] Preferably, the intermediate layer comprises a heat-conducting jacket, and a placement hole is provided inside the heat-conducting jacket. A metal sheet is fixedly installed inside the placement hole.

[0009] Preferably, the shielding layer comprises an electromagnetic shielding sheath, at least one placement cavity is equidistantly provided inside the electromagnetic shielding sheath, two adjacent placement cavities are separated by reinforcing support ribs, and the interior of the placement cavity is filled with ferromagnetic fluid.

[0010] Preferably, the first filling layer and the second filling layer are both made of antistatic material, and the antistatic material is a combination of rubber and PE foam cotton.

[0011] Preferably, the insulating sheath is an insulating material, and the insulating material is a combination of mica and asbestos fiber.

[0012] Preferably, the material of the high temperature resistant sheath is magnetic rubber.

[0013] Preferably, the metal sheet passes through the heat-conducting sheath, one end of the metal sheet contacts the inner side of the outer sheath, and the other end of the metal sheet contacts the outer side of the electromagnetic shielding sheath.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the present invention, a combined structure of an outer sheath and reinforcing ribs is provided on the outer sheath of the cable. The outer sheath is made of polyvinyl chloride, and the reinforcing ribs are woven from metal wires and flexible tapes. This achieves the goal of reducing the weight of the cable while ensuring its strength. At the same time, it effectively protects the cable from scratches, abrasion and chemical corrosion, and enhances the tensile strength of the cable, ensuring its structural integrity under external forces such as stretching and bending, so that the cable can adapt to a variety of installation and use environments.

[0016] 2. In the present invention, by adopting a special structural design in the shielding layer, equidistant placement cavities are opened inside and filled with ferromagnetic fluid, and adjacent placement cavities are separated by reinforced support ribs, thereby achieving excellent dynamic shielding against electromagnetic interference of various frequencies. At high frequencies, the magnetic particles form a compact structure to enhance the reflection and absorption capabilities, and at low frequencies, the magnetic permeability is adjusted to block interference, ensuring accurate and stable signal transmission inside the cable and improving the anti-interference performance of the cable.

[0017] 3. In the present invention, by utilizing the synergistic effect of the intermediate layer metal sheet and the shielding layer ferromagnetic fluid, the metal sheet penetrates the thermal conductive sheath to connect the outer sheath and the electromagnetic shielding sheath, thereby effectively conducting away the heat generated by the ferromagnetic fluid during operation, avoiding excessive temperature due to heat accumulation, thereby maintaining the stable state of the magnetic particles and carrier fluid inside the ferromagnetic fluid, ensuring that its electromagnetic properties remain unchanged, and allowing the ferromagnetic fluid to continue to provide a reliable shielding effect for the cable, thereby ensuring the normal operation of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall structural view of the present invention.

[0019] Figure 2It is a cross-sectional view of the present invention as a whole.

[0020] Figure 3 It is an overall exploded view of the present invention.

[0021] Figure 4 Schematic diagram of the structure of the shielding layer of the present invention.

[0022] Figure 5 Schematic diagram of the structure of the intermediate layer of the present invention.

[0023] Figure 6 Schematic diagram of the structure of the outer cladding of the present invention.

[0024] Figure 7 For the present invention Figure 4 Enlarged view of point A.

[0025] In the picture:

[0026] 1. Outer covering; 11. Outer sheath; 12. Jack; 13. Reinforcement ribs;

[0027] 2. Middle layer; 21. Thermal conductive jacket; 22. Placement hole; 23. Metal sheet;

[0028] 3. Shielding layer; 31. Electromagnetic shielding jacket; 32. Placement cavity; 33. Strengthening support ribs;

[0029] 4. High temperature resistant sheath; 5. First filling layer; 6. Second filling layer; 7. Insulation sheath; 8. Wire core. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figures 1 to 7 , the present invention provides a technical solution for a high-strength and high-temperature resistant cable:

[0032] A high-strength, high-temperature resistant cable comprises an outer sheath 1, an intermediate layer 2 for conducting cable heat away is fixedly installed on the inner side of the outer sheath 1, a shielding layer 3 for improving the cable shielding effect is fixedly installed on the inner side of the intermediate layer 2, a high-temperature resistant sheath 4 is fixedly installed on the inner side of the shielding layer 3, at least one wire core 8 is arranged inside the high-temperature resistant sheath 4, an insulating sheath 7 is provided on the outer side of the wire core 8, and a first filling layer 5 and a second filling layer 6 are filled between two adjacent insulating sheaths 7.

[0033] As an embodiment of the present invention,Figure 3 and Figure 6 As shown in Figure 6 , the outer sheath layer 1 includes an outer sheath 11. An insertion hole 12 is provided inside the outer sheath 11, and a reinforcing rib 13 is inserted inside the insertion hole 12. The outer sheath 11 is a reinforcing layer, and the material of the outer sheath 11 is polyvinyl chloride. The polyvinyl chloride outer sheath 11 can prevent the cable from being scratched, worn, etc. At the same time, it has strong acid and alkali corrosion resistance, and can protect the internal structure of the cable from being eroded by external chemical substances. The reinforcing rib 13 is woven by metal wires and flexible bands, which can effectively improve the tensile strength of the cable. By inserting the reinforcing rib 13 into the inside of the outer sheath 11, it is possible to reduce the overall weight of the cable while ensuring the strength of the cable.

[0034] As an embodiment of the present invention, as Figure 3 and Figure 5 shown in Figure 5 , the intermediate layer 2 includes a heat-conducting sheath 21. A placement hole 22 is provided inside the heat-conducting sheath 21, and a metal sheet 23 is fixedly installed inside the placement hole 22. The metal sheet 23 penetrates through the heat-conducting sheath 21. One end of the metal sheet 23 is in contact with the inner side of the outer sheath 11, and the other end of the metal sheet 23 is in contact with the outer side of the electromagnetic shielding sheath 31.

[0035] During operation, since the ferrofluid itself not only has good heat conduction performance but also can form a magnetic shielding layer around the cable when there is an external electromagnetic field. At this time, when one end of the metal sheet 23 is in contact with the outer sheath 11 and the other end is in contact with the electromagnetic shielding sheath 31, the metal sheet 23 forms an efficient heat conduction channel, which quickly conducts the heat in the ferrofluid to the outer sheath 11, effectively avoiding the overheating of the ferrofluid due to heat accumulation, maintaining the stable state of the magnetic particles and the carrier liquid inside the ferrofluid, ensuring that its electromagnetic characteristics do not change, and thus continuously and stably providing a reliable shielding effect for the cable.

[0036] As an embodiment of the present invention, as Figure 4 and Figure 7 shown in Figure 7 , the shielding layer 3 includes an electromagnetic shielding sheath 31. At least one placement cavity 32 is equidistantly provided inside the electromagnetic shielding sheath 31. Adjacent two placement cavities 32 are separated by a reinforcing support rib 33. The placement cavity 32 is filled with ferrofluid. The ferrofluid is composed of nanoscale magnetic particles uniformly dispersed in a carrier liquid and maintained in a stable state by a surfactant. When there is no electromagnetic interference, the distribution of these magnetic particles is relatively disordered and chaotic, with a certain fluidity, and its viscosity is in a relatively stable state; when subjected to electromagnetic interference, the magnetic particles will quickly align along the magnetic field direction to form an ordered structure such as a chain shape or a column shape. At this time, after the magnetic particles are arranged to form an ordered structure, the internal friction of the fluid will increase, resulting in an increase in viscosity. The material of the high-temperature resistant sheath 4 is magnetic rubber.

[0037] During operation, when there is no electromagnetic interference, the ferrofluid has a certain fluidity. At the same time, the metal sheets 23 are distributed in the heat-conducting sheath 21, and the reinforcing ribs 13 are arranged inside the outer sheath 11. Therefore, when the cable is arranged and placed as a whole, it is relatively flexible, thereby improving the plasticity of the cable and facilitating the operation of the staff.

[0038] When the cable starts to operate, if there is external electromagnetic interference, the nano-scale magnetic particles inside the ferrofluid exhibit a high degree of sensitivity. The nano-scale magnetic particles can real-time sense the changes in the frequency and direction of the electromagnetic interference and quickly and spontaneously align along the magnetic field direction. For high-frequency electromagnetic interference, the magnetic particles may form a more compact and complex ordered structure, rapidly changing the local electromagnetic characteristics of the fluid and increasing the reflection and absorption capabilities of high-frequency electromagnetic waves. For low-frequency electromagnetic interference, the magnetic particles will also be arranged in an orderly manner to adjust the overall magnetic permeability, making the ferrofluid act like an adaptive filter, effectively blocking electromagnetic interference of different frequencies from entering the cable interior, thereby achieving excellent dynamic shielding characteristics for electromagnetic interference of multiple frequencies.

[0039] When a small amount of electromagnetic interference is generated inside the ferrofluid during the anti-interference process, the magnetic rubber of the high-temperature resistant sheath 4 interacts with the weak electromagnetic interference generated by the ferrofluid. This interaction can change the propagation direction and intensity of the weak interference, causing it to be attenuated or reflected within the magnetic rubber layer and unable to further propagate towards the cable inner core 8, thereby ensuring the accuracy and stability of the signal transmission inside the cable and further enhancing the overall anti-interference ability of the cable.

[0040] When the cable is subjected to impact or collision, the fluidity and viscosity of the ferrofluid enable the internal magnetic particles and the carrier liquid to undergo relative movement at the moment of impact, thereby effectively absorbing and dispersing the impact energy, preventing the impact energy from being directly transmitted to the wire harness and causing damage to it, ensuring the normal operation of the cable under complex working conditions, enhancing the overall stability and durability of the cable, and effectively extending the service life of the cable.

[0041] As an embodiment of the present invention, as Figure 2 and Figure 3 shown, the first filling layer 5 and the second filling layer 6 are both anti-static materials, and the anti-static materials are a combination of rubber and PE foam cotton. The insulating cladding 7 is an insulating material, and the insulating material is a combination of mica and asbestos fibers.

[0042] During operation, the insulating cladding 7 can reliably prevent current leakage between the cores 8, ensuring that each core 8 works independently without interference, greatly improving the overall electrical safety and stability of the cable, enabling the cable to adapt to various complex and harsh working environments, and effectively guaranteeing the safe and reliable power transmission.

[0043] Working principle: The outer sheath 11 is made of polyvinyl chloride material, which can effectively prevent the cable from being scratched, worn, and eroded by chemical substances such as acids and alkalis. The reinforcing rib 13 is woven by metal wires and flexible bands. The metal wires provide high-strength tensile support, and the flexible bands endow it with a certain degree of flexibility. When the cable is subjected to tensile force, the reinforcing rib 13 evenly disperses the tensile force through its woven structure, avoiding stress concentration at a certain point and causing cable damage. The reinforcing rib 13 is inserted into the inner jack 12 of the outer sheath 11. This structural design not only enhances the tensile strength of the cable but also reduces the usage amount of metal materials compared with the traditional all-metal armor layer, thus reducing the overall weight of the cable. During the installation and use of the cable, the outer sheath 11 protects the internal structure, and the reinforcing rib 13 ensures the structural integrity of the cable when subjected to external forces such as stretching and bending. The two work together to reduce the overall weight while ensuring the strength of the cable;

[0044] The metal sheet 23 placed in the internal placement hole 22 of the heat-conducting sheath 21 is a good heat conductor. When the cable is working, the ferrofluid filled in the placement cavity 32 of the electromagnetic shielding sheath 31 forms chain-like, columnar and other ordered structures due to the action of the external electromagnetic field, and the nano-scale magnetic particles rapidly arrange along the magnetic field direction. During this process, the interaction between the magnetic particles is enhanced, resulting in an increase in the internal friction of the fluid. At the same time, electromagnetic interference will cause an induced current to be generated inside the ferrofluid, thereby increasing the temperature of the ferrofluid. At this time, one end of the metal sheet 23 is in contact with the inner side of the outer sheath 11, and the other end is in contact with the outer side of the electromagnetic shielding sheath 31, which can timely conduct the heat in the ferrofluid, prevent the temperature of the ferrofluid from continuously rising and being difficult to dissipate, and then maintain the stable performance of the ferrofluid, ensuring its continuous effective role in electromagnetic shielding and heat conduction, and guaranteeing the normal operation of the overall cable;

[0045] The ferrofluid filled in the internal placement cavity 32 of the electromagnetic shielding sheath 31 is evenly dispersed in the carrier liquid by nano-scale magnetic particles without electromagnetic interference, and the distribution is relatively disordered and chaotic, and the interaction between the particles is weak, making the fluid have a certain fluidity and the viscosity is in a relatively stable state. At this time, the metal sheet 23 is distributed in the heat-conducting sheath 21, and the reinforcing rib 13 is inside the outer sheath 11. This structural layout makes the overall cable maintain a relatively soft state during layout and placement, with high plasticity, facilitating operations such as installation and wiring by staff;

[0046] When external electromagnetic interference occurs, the electromagnetic field acts on the ferrofluid, and the magnetic particles quickly align along the magnetic field direction to form an ordered structure. This change leads to a decrease in the distance between particles, an increase in the interaction, a sharp increase in the internal friction of the fluid, and a significant increase in viscosity. The high-viscosity ferrofluid can effectively block electromagnetic interference and prevent the external electromagnetic field from affecting the inner core 8 of the cable, protecting the stability and accuracy of signal transmission. At the same time, the temperature change of the ferrofluid can be conducted outward through the metal sheet 23 to ensure its stable performance and continuous shielding effect. The high-temperature resistant sheath 4 is made of magnetic rubber material, and its magnetic properties can assist in shielding the electromagnetic field to a certain extent, further enhancing the overall shielding effect of the cable. In a high-temperature environment, the magnetic rubber can still maintain stable physical and chemical properties to ensure the reliability of the shielding layer 3 function;

[0047] The insulation cladding 7 can reliably prevent current leakage between the inner cores 8, ensuring that each inner core 8 works independently without interference, greatly improving the overall electrical safety and stability of the cable, enabling the cable to adapt to various complex and harsh working environments, and effectively guaranteeing the safe and reliable power transmission.

[0048] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-strength and high-temperature-resistant cable, characterized in that: The invention comprises an outer sheath (1), an intermediate layer (2) for conducting heat away from the cable is fixedly installed on the inner side of the outer sheath (1), a shielding layer (3) for improving the shielding effect of the cable is fixedly installed on the inner side of the intermediate layer (2), a high-temperature resistant sheath (4) is fixedly installed on the inner side of the shielding layer (3), the material of the high-temperature resistant sheath (4) is magnetic rubber, at least one wire core (8) is arranged inside the high-temperature resistant sheath (4), an insulating sheath (7) is provided on the outer side of the wire core (8), and a first filling layer (5) and a second filling layer (6) are filled between two adjacent insulating sheaths (7); The intermediate layer (2) comprises a heat-conducting jacket (21), a placement hole (22) is provided inside the heat-conducting jacket (21), and a metal sheet (23) is fixedly installed inside the placement hole (22); The shielding layer (3) comprises an electromagnetic shielding sheath (31), at least one placement cavity (32) is equidistantly provided inside the electromagnetic shielding sheath (31), two adjacent placement cavities (32) are separated by reinforcing support ribs (33), and the interior of the placement cavity (32) is filled with ferromagnetic fluid; The metal sheet (23) passes through the heat-conducting sheath (21), one end of the metal sheet (23) contacts the inner side of the outer sheath (11), and the other end of the metal sheet (23) contacts the outer side of the electromagnetic shielding sheath (31).

2. The high-strength and high-temperature resistant cable according to claim 1, wherein: The outer cladding (1) comprises an outer sheath (11), an insertion hole (12) is provided on the inner side of the outer sheath (11), and a reinforcing rib (13) is inserted into the interior of the insertion hole (12).

3. A high-strength and high-temperature resistant cable according to claim 1, characterized in that: The first filling layer (5) and the second filling layer (6) are both made of antistatic material, and the antistatic material is a combination of rubber and PE foam cotton.

4. A high-strength and high-temperature resistant cable according to claim 1, characterized in that: The insulating sheath (7) is an insulating material, and the insulating material is a combination of mica and asbestos fibers.

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