High-strength high-temperature-resistant cable

Abstract

A high-strength high-temperature-resistant cable disclosed by the present invention comprises an outer cladding layer, a middle layer used for leading out heat of the cable is fixedly installed on the inner side of the outer cladding layer, a shielding layer used for improving the shielding effect of the cable is fixedly installed on the inner side of the middle layer, and a high-temperature-resistant sheath is fixedly installed on the inner side of the shielding layer. At least one wire core is arranged in the high-temperature-resistant sheath, the outer side of the wire core is sleeved with an insulating wrapping layer, and the space between every two adjacent insulating wrapping layers is filled with a first filling layer and a second filling layer; a special structural design is adopted in the shielding layer, placing cavities are formed in the shielding layer at equal intervals and filled with ferrofluid, and the adjacent placing cavities are separated through reinforcing supporting ribs, so that excellent dynamic shielding of electromagnetic interference of various frequencies is achieved, magnetic particles form a compact structure at high frequency to enhance reflection and absorption capacity, and magnetic conductivity is adjusted at low frequency to block interference; accurate and stable signal transmission in the cable is ensured, and the anti-interference performance of the cable is improved.

Description

Technical Field

[0001] The 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 cable that can work normally in high temperature environment. It is usually used in industrial equipment that needs to withstand high temperature, furnace refining, heat treatment equipment, petrochemical industry and other application scenarios in high temperature environment. It plays an important role in petrochemical, metallurgy, thermal power and other fields. This type of cable needs to have high temperature resistance, heat resistance, anti-aging, flame retardancy and other characteristics.

[0003] The 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 by 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 coated 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 that the metal shielding layer proposed in the above background technology is not only heavy but also poor in flexibility and 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 extracting cable heat is fixedly installed on the inner side of the outer sheath, a shielding layer for improving the cable shielding effect 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 arranged 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.

[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 middle layer comprises a heat-conducting jacket, a placement hole is provided inside the heat-conducting jacket, and 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 formed 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: 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 belts. This achieves the goal of reducing the weight while ensuring the strength of the cable. At the same time, the cable is effectively protected from scratches, abrasions and chemical erosion, and the tensile strength of the cable is enhanced, ensuring that the cable is structurally intact under external forces such as stretching and bending, so that the cable can adapt to a variety of installation and use environments.

[0015] 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, excellent dynamic shielding of electromagnetic interference of various frequencies is achieved. At high frequencies, the magnetic particles form a tight structure to enhance the reflection and absorption capabilities, and at low frequencies, the magnetic permeability is adjusted to block interference, thereby ensuring accurate and stable signal transmission inside the cable and improving the anti-interference performance of the cable.

[0016] 3. In the present invention, by utilizing the synergistic effect of the middle 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

[0017] Figure 1 It is the overall structural view of the present invention.

[0018] Figure 2 It is a cross-sectional view of the present invention as a whole.

[0019] Figure 3 It is an overall exploded view of the present invention.

[0020] Figure 4 It is a schematic structural diagram of the shielding layer of the present invention.

[0021] Figure 5 It is a schematic structural diagram of the intermediate layer of the present invention.

[0022] Figure 6 It is a schematic structural diagram of the outer cladding layer of the present invention.

[0023] Figure 7 For the present invention Figure 4 Enlarged view of point A.

[0024] In the figure: 1. Outer covering layer; 11. Outer sheath; 12. Socket; 13. Reinforcement ribs; 2. Middle layer; 21. Thermal conductive jacket; 22. Placement hole; 23. Metal sheet; 3. Shielding layer; 31. Electromagnetic shielding jacket; 32. Placement cavity; 33. Strengthening support ribs; 4. High temperature resistant sheath; 5. First filling layer; 6. Second filling layer; 7. Insulation sheath; 8. Wire core. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical scheme. Obviously, the described embodiments 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 work are within the scope of protection of the present invention.

[0026] See also Figures 1 to 7 , the present invention provides a technical solution for a high-strength and high-temperature resistant cable: 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 arranged 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.

[0027] As an embodiment of the present invention, Figure 3 and Figure 6As shown, the outer sheath 1 includes an outer sheath 11, an insertion hole 12 is opened on the inner side of the outer sheath 11, and a reinforcing rib 13 is inserted into the inside of the insertion hole 12. The outer sheath 11 is a reinforcement layer. The material of the outer sheath 11 is polyvinyl chloride. The outer sheath 11 made of polyvinyl chloride can prevent the cable from being scratched, worn, etc., and at the same time, it has strong acid and alkali corrosion resistance, which can protect the internal structure of the cable from corrosion by external chemicals. The reinforcing rib 13 is woven from metal wires and flexible belts, which can effectively improve the tensile strength of the cable. By inserting the reinforcing rib 13 into the inner part of the outer sheath 11, it can be achieved that the overall weight of the cable can be reduced while ensuring the strength of the cable.

[0028] As an embodiment of the present invention, Figure 3 and Figure 5 As shown, the middle layer 2 includes a thermally conductive sleeve 21, a placement hole 22 is opened inside the thermally conductive sleeve 21, a metal sheet 23 is fixedly installed inside the placement hole 22, the metal sheet 23 passes through the thermally conductive sleeve 21, one end of the metal sheet 23 contacts the inner side of the outer sleeve 11, and the other end of the metal sheet 23 contacts the outer side of the electromagnetic shielding sleeve 31.

[0029] During operation, since the ferromagnetic fluid itself not only has good thermal conductivity but also can form a magnetic field 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 extraction channel, which quickly conducts the heat in the ferromagnetic fluid to the outer sheath 11, effectively avoiding the ferromagnetic fluid from overheating due to heat accumulation, maintaining the stable state of the magnetic particles and carrier liquid inside the ferromagnetic fluid, ensuring that its electromagnetic properties do not change, and thus continuously and stably providing a reliable shielding effect for the cable.

[0030] As an embodiment of the present invention, Figure 4 and Figure 7 As shown, the shielding layer 3 includes an electromagnetic shielding sheath 31, and 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. The interior of the placement cavity 32 is filled with ferromagnetic fluid. The ferromagnetic fluid is composed of nano-scale magnetic particles evenly 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 messy, with a certain fluidity, and its viscosity is in a relatively stable state; when subjected to electromagnetic interference, the magnetic particles will quickly arrange along the direction of the magnetic field to form ordered structures such as chains and columns. At this time, after the magnetic particles are arranged to form an ordered structure, the friction inside the fluid will increase, resulting in an increase in viscosity. The material of the high temperature resistant sheath 4 is magnetic rubber.

[0031] When working, the ferromagnetic fluid has a certain fluidity when there is no electromagnetic interference. At the same time, the metal sheet 23 is distributed in the heat-conducting sheath 21, and the reinforcing rib 13 is arranged inside the outer sheath 11, so the cable as a whole is relatively soft when arranged, thereby improving the plasticity of the cable and facilitating the operation of the staff; When the cable starts working, if there is external electromagnetic interference, the nano-scale magnetic particles inside the ferromagnetic fluid will show high sensitivity. The nano-scale magnetic particles can sense the frequency and direction changes of the electromagnetic interference in real time, and quickly and spontaneously arrange themselves along the direction of the magnetic field; for high-frequency electromagnetic interference, the magnetic particles may form a more compact and complex ordered structure, quickly change the local electromagnetic properties of the fluid, and increase the reflection and absorption capacity of high-frequency electromagnetic waves; for low-frequency electromagnetic interference, the magnetic particles will also be arranged in an orderly manner, adjusting the overall magnetic permeability, so that the ferromagnetic fluid is like an adaptive filter, effectively blocking electromagnetic interference of different frequencies from entering the cable, thereby achieving excellent dynamic shielding characteristics for electromagnetic interference of multiple frequencies; When a small amount of electromagnetic interference is generated inside the ferromagnetic fluid during the anti-interference process, the magnetic properties of the magnetic rubber of the high temperature resistant sheath 4 interact with the weak electromagnetic interference generated by the ferromagnetic fluid. This interaction can change the propagation direction and intensity of the weak interference, causing it to be attenuated or reflected in the magnetic rubber layer and unable to propagate further to the cable 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; When the cable is impacted or hit, the fluidity and viscosity of the ferromagnetic fluid enable the internal magnetic particles and the carrier fluid to move relative to each other at the moment of impact, thereby effectively absorbing and dispersing the impact energy, preventing the impact energy from being directly transmitted to the wiring 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; As an embodiment of the present invention, Figure 2 and Figure 3 As shown, the first filling layer 5 and the second filling layer 6 are both antistatic materials, which are a combination of rubber and PE foam cotton, and the insulating sheath 7 is insulating material, which is a combination of mica and asbestos fiber.

[0032] During operation, the insulating sheath 7 can reliably prevent current leakage between the wire cores 8, ensuring that each wire core 8 works independently without interfering with each other, 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 ensuring the safety and reliability of power transmission.

[0033] Working principle: The outer sheath 11 is made of polyvinyl chloride, which effectively prevents the cable from being scratched, worn, and corroded by chemical substances such as acids and alkalis. The reinforcing ribs 13 are woven from metal wires and flexible belts. The metal wires provide high-strength tensile support, and the flexible belts give it a certain degree of flexibility. When the cable is subjected to tension, the reinforcing ribs 13 disperse the tension evenly through their woven structure to avoid stress concentration at a certain point that causes damage to the cable. The reinforcing ribs 13 are inserted into the inner jack 12 of the outer sheath 11. This structural design enhances the tensile strength of the cable while reducing the amount of metal material used compared to the traditional all-metal armor layer, thereby 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 ribs 13 ensure 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. The metal sheet 23 in the placement hole 22 inside the thermally conductive sheath 21 is a good thermal conductor. When the cable is working, the ferromagnetic fluid filled in the placement cavity 32 of the electromagnetic shielding sheath 31 is affected by the external electromagnetic field, and the nano-scale magnetic particles in the ferromagnetic fluid are rapidly arranged along the direction of the magnetic field to form chain-like, columnar and other ordered structures. In this process, the interaction between the magnetic particles is enhanced, resulting in an increase in the friction inside the fluid. At the same time, electromagnetic interference will cause an induced current to be generated inside the ferromagnetic fluid, thereby increasing the temperature of the ferromagnetic fluid. 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 extract the heat in the ferromagnetic fluid, avoid the continuous increase in the temperature of the ferromagnetic fluid and prevent it from being difficult to dissipate, thereby maintaining the stability of the performance of the ferromagnetic fluid, ensuring that it continues to play an effective role in electromagnetic shielding and heat conduction, and ensuring the normal operation of the cable as a whole; The electromagnetic shielding sheath 31 is internally placed with a cavity 32 filled with ferromagnetic fluid. When there is no electromagnetic interference, the nano-scale magnetic particles are evenly dispersed in the carrier liquid, and the distribution is relatively disordered and messy. The interaction between the particles is weak, so that the fluid has a certain fluidity and the viscosity is in a relatively stable state. At this time, the metal sheet 23 is distributed in the thermal conductive sheath 21, and the reinforcing ribs 13 are in the outer sheath 11. This structural layout allows the cable as a whole to remain relatively soft when arranged and placed, with high plasticity, which is convenient for the staff to perform installation, wiring and other operations; When external electromagnetic interference occurs, the electromagnetic field acts on the ferromagnetic fluid, and the magnetic particles are quickly arranged along the direction of the magnetic field to form an ordered structure. This change causes the spacing between the particles to decrease, the interaction to increase, the internal friction of the fluid to increase sharply, and the viscosity to increase significantly. The high-viscosity ferromagnetic fluid can effectively block electromagnetic interference, prevent the external electromagnetic field from affecting the internal core 8 of the cable, and protect the stability and accuracy of signal transmission. At the same time, the temperature change of the ferromagnetic fluid 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, ensuring the reliability of the function of the shielding layer 3; The insulating sheath 7 can reliably prevent current leakage between the wire cores 8, ensuring that each wire core 8 works independently without interfering with each other, 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 ensuring the safety and reliability of power transmission.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-strength, 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), 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).

2. A high-strength, high-temperature resistant cable according to claim 1, characterized in that: 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. The high-strength and high-temperature resistant cable according to claim 1, characterized in that: 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).

4. The high-strength and high-temperature resistant cable according to claim 1, characterized in that: 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.

5. The 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.

6. The 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.

7. The high-strength and high-temperature resistant cable according to claim 1, characterized in that: The material of the high temperature resistant sheath (4) is magnetic rubber.

8. The high-strength and high-temperature resistant cable according to claim 3, characterized in that: 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).

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