Armored polyphosphazene insulated power cable

Abstract

The utility model discloses an armored polyphosphazene insulated power cable, relates to the technical field of insulated power cables, and aims to solve the problems that in the installation, maintenance and replacement processes of a conventional power cable, if misoperation may cause damage to an insulating material, and if the insulating effect is poor, a cable conductor may be in direct contact with the surrounding environment, and the power cable cannot be damaged. Therefore, the conductor is affected with damp, corroded, short-circuited and the like. A cable core comprises wire cores, a filling layer and a steel wire rope reinforcing core, the five wire cores are annularly arranged in the cable core, each wire core comprises a conductor and a composite insulation shielding layer, the conductors are located in the wire cores, the composite insulation shielding layer is arranged in the filling layer, and the composite insulation shielding layer is arranged in the filling layer. A lining layer is arranged on the outer side of the cable core, a composite insulating layer is arranged on the outer side of the lining layer, a steel wire armor layer is arranged on the outer side of the composite insulating layer, and an outer sheath is arranged on the outer side of the steel wire armor layer.

Description

Technical Field

[0001] The utility model relates to the technical field of insulated power cables, in particular to an armored polyphosphazene insulated power cable. Background Art

[0002] Armored polyphosphazene insulated power cable is a special cable design that combines polyphosphazene insulation material and armored protection structure. Armored polyphosphazene insulated power cable is suitable for various application scenarios that require high reliability, high safety and high heat resistance. For example, it can be used in production lines and equipment in industries such as petroleum, chemical, electric power, and metallurgy, as well as in the power supply systems of public facilities such as high-rise buildings, subways, and tunnels. In these scenarios, cables need to withstand the influence of harsh environments such as high temperature, high pressure, and corrosion, while armored polyphosphazene insulated power cables can provide good electrical performance and mechanical protection to ensure the stable operation of the power system.

[0003] The Chinese patent announcement number is CN203503381U, which discloses an insulated shielded control cable, wherein the innermost layer of the insulated shielded control cable is an insulated wire core layer, wherein the insulated wire core layer includes a plurality of insulated wire cores, wherein the insulated wire core includes a conductor, an insulating layer and an inner shielding layer, wherein the inner shielding layer is woven with copper tape or copper wire, wherein the insulated wire core layer is coated with a polyester tape, wherein the outer portion of the polyester tape is coated with a shielding layer, a polyvinyl chloride cushion layer, an armor layer and a sheath in sequence from the inside to the outside, wherein the shielding layer includes an aluminum foil layer and a copper wire layer, wherein the aluminum foil layer and the copper wire layer are separated by an isolation sleeve, wherein the armor layer is formed by twisting a non-circular aluminum-clad steel core wire, and wherein the sheath is a flame-retardant polyvinyl chloride sheath. The insulated shielded control cable has excellent shielding performance, anti-interference performance and good mechanical properties.

[0004] The above-mentioned existing technical solutions have the following defects: during the installation, maintenance and replacement of existing power cables, improper operation may cause the insulation material to be damaged, and poor insulation effect may cause the cable conductor to come into direct contact with the surrounding environment, thereby causing problems such as moisture, corrosion and short circuit of the conductor. This will not only seriously affect the normal operation of the cable, but may also cause dangerous situations such as fire and explosion. Therefore, we propose an armored polyphosphazene insulated power cable to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide an armored polyphosphazene insulated power cable to solve the problem in the above background technology that during the installation, maintenance and replacement of the existing power cable, improper operation may cause the insulation material to be damaged, and poor insulation effect may cause the cable conductor to come into direct contact with the surrounding environment, thereby causing the conductor to be damp, corroded and short-circuited. This will not only seriously affect the normal operation of the cable, but also may cause dangerous situations such as fire and explosion.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an armored polyphosphazene insulated power cable, comprising a cable core, the cable core comprising a wire core, a filling layer and a steel wire rope reinforcement core, a steel wire rope reinforcement core is arranged at the central position inside the cable core, five wire cores are arranged in an annular shape inside the cable core, a filling layer is arranged between the wire core and the steel wire rope reinforcement core, the wire core comprises a conductor and a composite insulating shielding layer, the conductor is located inside the wire core, and the composite insulating shielding layer is located outside the conductor, an inner lining layer is arranged outside the cable core, a composite insulating layer is arranged outside the inner lining layer, a steel wire armor layer is arranged outside the composite insulating layer, and an outer sheath is arranged outside the steel wire armor layer.

[0007] Preferably, the composite insulating shielding layer comprises an inner insulating layer and a shielding layer, the inner insulating layer is located on the inner side of the shielding layer, the inner insulating layer is made of Teflon material, and the shielding layer is made of aluminum foil material.

[0008] Preferably, the inner lining layer includes a fire-resistant layer, a pressure-resistant layer, an anti-corrosion layer and a thermal insulation layer, the fire-resistant layer is located at the outer end of the inner lining layer, the pressure-resistant layer is provided on the inner side of the fire-resistant layer, the anti-corrosion layer is provided on the inner side of the pressure-resistant layer, and the thermal insulation layer is provided on the inner side of the anti-corrosion layer, the fire-resistant layer is made of ceramic silicone rubber, the pressure-resistant layer is made of polystyrene, the anti-corrosion layer is made of polytetrafluoroethylene propylene, and the thermal insulation layer is made of aromatic sulfone.

[0009] Preferably, the composite insulation layer includes a first insulation layer, a second insulation layer and a third insulation layer, the first insulation layer is located at the outer end of the composite insulation layer, the second insulation layer is arranged on the inner side of the first insulation layer, the third insulation layer is arranged on the inner side of the second insulation layer, the first insulation layer is made of foamed polyethylene, the second insulation layer is made of mica tape, and the third insulation layer is made of polyphosphazene.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model can quickly form a hard ceramic shell under high temperature flames by setting ceramic silicone rubber, effectively blocking further burning of the flame. This feature enables the cable to maintain the integrity of the line in the event of a fire, reduce the damage to the cable caused by the fire, and thus ensure the smooth flow of electricity and communication; ceramic silicone rubber does not contain harmful substances such as halogens and heavy metals, and does not produce corrosive and toxic substances when burned, which meets environmental protection requirements. This helps to reduce harm to the environment and human body; ceramic silicone rubber has excellent electrical insulation properties, which can ensure the stability and reliability of the cable during transmission. In addition, it also has low capacitance and inductance properties, which can effectively reduce electromagnetic interference; ceramic silicone rubber can be used continuously in the temperature range of -40°C to 850°C, maintaining the stable operation of the cable under different temperature environments; ceramic silicone rubber has good processing properties and can be easily made into cables of various shapes and sizes. At the same time, its maintenance is relatively simple, which reduces the cost of use. Polystyrene is an excellent insulating material that can effectively prevent current leakage and electromagnetic interference in the cable, and ensure the stability and reliability of cable transmission. This is essential for ensuring the safety of electricity and communications; polystyrene has good physical properties, is not easy to absorb moisture, has excellent low moisture permeability and good moisture resistance. In a humid or underwater environment, polystyrene can effectively protect the cable from moisture erosion and extend the service life of the cable; the density of polystyrene is very small, about 0.03g / cm³, so the cable products made of polystyrene are relatively light and can reduce transportation costs. In addition, due to its good insulation and moisture resistance, polystyrene cables can reduce energy loss during use and have good energy-saving effects; polystyrene cables can be widely used in the electrical manufacturing industry, such as motor windings, capacitors, transformers, insulation pads, cable outer coatings, etc. Its good performance enables the cable to maintain stable performance in various working environments. The operating temperature range of polyperfluoroethylene propylene is wide, and it can be used in the temperature range of -85℃ to 205℃, which makes it very suitable for cables in high temperature environments. Under high temperature conditions, polyperfluoroethylene propylene can maintain its excellent performance and ensure the stable operation of the cable; polyperfluoroethylene propylene has excellent electrical insulation properties and can effectively prevent current leakage and electromagnetic interference. This makes FEP cables highly reliable and stable when transmitting signals and data; FEP has good stability to most chemicals and is not easily corroded. This makes FEP cables have a long service life in corrosive environments such as chemicals and petroleum; FEP can maintain good performance under long-term light and high temperature conditions and is not prone to aging. This makes FEP cables have a long service life and stable performance. Aromatic sulfone has excellent insulation properties, which can effectively prevent current leakage and electromagnetic interference, and ensure the stability and reliability of cable transmission; Aromatic sulfone can maintain stable performance in high temperature environments.After being heated in hot air at 300℃ for 100 hours, its strength loss is less than 5%. This makes sulfonamide cable suitable for high-temperature working environment; sulfonamide has high flame retardancy and a limiting oxygen index of more than 30%. At the same time, except for several highly polar solvents and concentrated sulfuric acid, it has good stability to chemicals at room temperature. These characteristics make sulfonamide cable have a certain protective effect in fire or chemical corrosion environment, solving the problem that improper operation may cause damage to the insulation material during the installation, maintenance and replacement of existing power cables. Poor insulation effect may cause direct contact between the cable conductor and the surrounding environment, thereby causing problems such as moisture, corrosion and short circuit of the conductor. This will not only seriously affect the normal operation of the cable, but may also cause dangerous situations such as fire and explosion.

[0012] The third insulating layer of the utility model adopts polyphosphazene material, which has good flame retardant properties, which is mainly due to the phosphorus and nitrogen elements in its molecular structure. These elements can form non-flammable phosphoric acid and nitrogen at high temperatures, thereby preventing the spread of flames and improving the fire safety of cables. Secondly, polyphosphazene also has high thermal stability and can maintain its performance stable under high temperatures or even extreme conditions, which is of great significance for the application of cables in high temperature environments. In addition, polyphosphazene also has excellent electrical properties, such as high insulation strength, low dielectric constant and low dielectric loss, etc. These characteristics make polyphosphazene cables have high efficiency and stability when transmitting electric energy. Finally, polyphosphazene also has good mechanical properties, such as high strength, high modulus and good wear resistance, etc. These characteristics make the cable have good durability and reliability during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the composite insulating shielding layer in the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the inner lining layer in the utility model;

[0016] Figure 4 It is a structural schematic diagram of the composite insulating layer in the utility model.

[0017] In the figure: 1. conductor; 2. composite insulation shielding layer; 3. wire core; 4. filling layer; 5. inner lining layer; 6. cable core; 7. composite insulation layer; 8. steel wire armor layer; 9. outer sheath; 10. steel wire rope reinforcement core; 11. inner insulation layer; 12. shielding layer; 13. fire-resistant layer; 14. pressure-resistant layer; 15. anti-corrosion layer; 16. thermal insulation layer; 17. first insulation layer; 18. second insulation layer; 19. third insulation layer. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] See also Figure 1-4 The utility model provides an embodiment: an armored polyphosphazene insulated power cable, including a cable core 6, the cable core 6 includes a wire core 3, a filling layer 4 and a steel wire rope reinforcing core 10, a steel wire rope reinforcing core 10 is arranged at the center position inside the cable core 6, five wire cores 3 are arranged in an annular shape inside the cable core 6, a filling layer 4 is arranged between the wire core 3 and the steel wire rope reinforcing core 10, the wire core 3 includes a conductor 1 and a composite insulating shielding layer 2, the conductor 1 is located inside the wire core 3, and the composite insulating shielding layer 2 is located outside the conductor 1, an inner lining layer 5 is arranged on the outside of the cable core 6, a composite insulating layer 7 is arranged on the outside of the inner lining layer 5, a steel wire armor layer 8 is arranged on the outside of the composite insulating layer 7, and an outer sheath 9 is arranged on the outside of the steel wire armor layer 8.

[0020] See also Figure 2 The composite insulating shielding layer 2 includes an inner insulating layer 11 and a shielding layer 12. The inner insulating layer 11 is located on the inner side of the shielding layer 12. The inner insulating layer 11 is made of Teflon material, and the shielding layer 12 is made of aluminum foil material.

[0021] The inner insulating layer 11 is made by extrusion, and the shielding layer 12 is made by wrapping. Teflon has excellent high temperature resistance and a wide range of operating temperatures. It can be used in a temperature range of -100°C to +260°C, and can even withstand temperatures up to +300°C for a short period of time. This allows Teflon cables to maintain stable performance in high temperature environments and is suitable for high temperature workplaces such as metallurgy, chemical industry, etc.; it has excellent electrical properties, including low dielectric constant, low dielectric loss, high insulation resistance and good arc resistance. These characteristics make Teflon cables widely used in high-frequency signal transmission, high-voltage electrical appliances, electronic equipment, etc.; Teflon has good stability to most chemical substances, such as acids, alkalis, greases, solvents, etc., and is not easily corroded. This allows Teflon cables to maintain a long service life in corrosive environments such as chemicals, petroleum, and pharmaceuticals; Teflon has good wear resistance, and is not prone to scratches, deformation, etc. even under long-term friction and use. This makes Teflon cables more durable in occasions where frequent bending or movement is required, such as automobiles, handicrafts, conveying machinery and equipment, etc.; it is easy to process into various shapes and sizes, which is convenient for making various cables and wires. At the same time, the installation and maintenance of Teflon cables are relatively simple, which reduces the cost of use. Aluminum foil can effectively shield the electromagnetic interference inside the cable and block the influence of external electromagnetic fields. This helps to improve the quality of cable transmission and ensure that the signal is not interfered with; aluminum foil is lighter and thinner than other shielding materials, which makes the cable more flexible and convenient during wiring and installation. Aluminum foil can also be easily bent and folded to adapt to cables of different shapes; aluminum foil has excellent conductive properties and can effectively disperse and absorb static electricity and electromagnetic radiation in the cable. This helps to protect the signal integrity inside the cable and reduce signal fluctuations and interference; aluminum foil can form a dense aluminum oxide layer during processing, which has excellent anti-corrosion properties. In addition, aluminum originally has good antioxidant properties and can form a dense oxide film in the air to effectively prevent further oxidation reactions. This oxide film can protect the aluminum foil from being corroded by oxygen, moisture, acid, alkali and other corrosive substances in the atmosphere, thereby extending the service life of the cable; the conductive properties of the aluminum foil can improve the transmission efficiency and stability of wires and cables, prevent wire and cable aging, and thus extend the service life of wires and cables.

[0022] See also Figure 3 The inner lining 5 includes a fire-resistant layer 13, a pressure-resistant layer 14, an anti-corrosion layer 15 and a thermal insulation layer 16. The fire-resistant layer 13 is located at the outer end of the inner lining 5. The pressure-resistant layer 14 is arranged on the inner side of the fire-resistant layer 13. The anti-corrosion layer 15 is arranged on the inner side of the pressure-resistant layer 14. The thermal insulation layer 16 is arranged on the inner side of the anti-corrosion layer 15. The fire-resistant layer 13 is made of ceramic silicone rubber, the pressure-resistant layer 14 is made of polystyrene, the anti-corrosion layer 15 is made of polytetrafluoroethylene propylene, and the thermal insulation layer 16 is made of aromatic sulfone.

[0023] The fire-resistant layer 13, the pressure-resistant layer 14, the anti-corrosion layer 15 and the heat-insulating layer 16 are all made by extrusion, and the fire-resistant layer 13 and the pressure-resistant layer 14, the pressure-resistant layer 14 and the anti-corrosion layer 15, and the anti-corrosion layer 15 and the heat-insulating layer 16 are all glued together. The ceramic silicone rubber can quickly form a hard ceramic shell under high-temperature flames, effectively blocking the further burning of the flames. This feature enables the cable to maintain the integrity of the line in the event of a fire, reducing the damage to the cable caused by the fire, thereby ensuring the smooth flow of electricity and communications; ceramic silicone rubber does not contain harmful substances such as halogens and heavy metals, and does not produce corrosive and toxic substances when burned, meeting environmental protection requirements. This helps to reduce harm to the environment and human body; ceramic silicone rubber has excellent electrical insulation properties, which can ensure the stability and reliability of the cable during transmission. In addition, it also has low capacitance and inductance performance, which can effectively reduce electromagnetic interference; ceramic silicone rubber can be used continuously in the temperature range of -40℃ to 850℃, maintaining the stable operation of the cable under different temperature environments; ceramic silicone rubber has good processing performance and can be easily made into cables of various shapes and sizes. At the same time, its maintenance is relatively simple, which reduces the cost of use. Polystyrene is an excellent insulating material that can effectively prevent current leakage and electromagnetic interference in the cable and ensure the stability and reliability of cable transmission. This is essential to ensure the safety of power and communications; polystyrene has good physical properties, is not easy to absorb moisture, has excellent low moisture permeability and good moisture resistance. In a humid or underwater environment, polystyrene can effectively protect the cable from moisture erosion and extend the service life of the cable; the density of polystyrene is very small, about 0.03g / cm³, so the cable products made of polystyrene are relatively light, which can reduce transportation costs. In addition, due to its good insulation and moisture resistance, polystyrene cables can reduce energy loss during use and have good energy-saving effects; polystyrene cables can be widely used in the electrical manufacturing industry, such as motor windings, capacitors, transformers, insulation pads, cable outer coatings, etc. Its good performance enables the cable to maintain stable performance in various working environments. The operating temperature range of FEP is wide, and it can be used in the temperature range of -85℃ to 205℃, which makes it very suitable for cables in high temperature environments. Under high temperature conditions, FEP can maintain its excellent performance and ensure the stable operation of the cable; FEP has excellent electrical insulation properties and can effectively prevent current leakage and electromagnetic interference. This makes FEP cables highly reliable and stable when transmitting signals and data; FEP has good stability to most chemicals and is not easily corroded. This allows FEP cables to maintain a long service life in corrosive environments such as chemicals and petroleum; FEP can maintain good performance under long-term light and high temperature conditions and is not prone to aging.This makes the FEP cable have a long service life and stable performance. Aromatic sulfone has excellent insulation, which can effectively prevent current leakage and electromagnetic interference, and ensure the stability and reliability of cable transmission. Aromatic sulfone can maintain stable performance in high temperature environment. After heating in hot air at 300℃ for 100 hours, its strength loss is less than 5%. This makes the aromatic sulfone cable suitable for high temperature working environment. Aromatic sulfone has high flame retardancy and the limiting oxygen index exceeds 30%. At the same time, except for several highly polar solvents and concentrated sulfuric acid, it has good stability to chemicals at room temperature. These characteristics make aromatic sulfone cables have a certain protective effect in fire or chemical corrosion environments.

[0024] See also Figure 4 The composite insulating layer 7 includes a first insulating layer 17, a second insulating layer 18 and a third insulating layer 19. The first insulating layer 17 is located at the outer end of the composite insulating layer 7, the second insulating layer 18 is arranged on the inner side of the first insulating layer 17, and the third insulating layer 19 is arranged on the inner side of the second insulating layer 18. The material of the first insulating layer 17 is foamed polyethylene, the material of the second insulating layer 18 is mica tape, and the material of the third insulating layer 19 is polyphosphazene.

[0025] The first insulating layer 17 and the third insulating layer 19 are both made by extrusion, and the second insulating layer 18 is made by wrapping. The foamed polyethylene has excellent insulation performance and high insulation resistivity, and can effectively prevent the electrostatic discharge of battery devices and prevent electrical accidents. In addition, it has good sealing performance, does not absorb moisture, does not corrode, and does not mildew, can ensure a long service life, and is suitable for various harsh working environments. Secondly, its physical properties are stable, and it has good corrosion resistance to acids, alkalis, oils and water, which can effectively protect cables, lines and other equipment from interference from the external environment and ensure the good operation of the equipment. Thirdly, the foamed polyethylene has good fire safety, has the characteristics of being difficult to burn and not dripping, and will not burn or spread in a fire, which can greatly reduce the fire hazard of the cable line system and ensure the safety of personnel and property. Finally, the foamed polyethylene is easy to use, simple and quick to construct, can reduce the consumption of labor and material resources, improve construction efficiency, and shorten the construction period. At the same time, it is small in size, light in weight, and easy to transport, which can reduce production costs. Mica tape has good insulation properties, which can effectively isolate the conductors in cables and wires, prevent current leakage and electric shock risks between conductors, and protect the normal operation of cables; mica tape is a very fire-resistant material with excellent fire resistance. In the structure of cables and wires, mica tape can withstand high temperatures, delay the spread of fire, and reduce the damage of fire to the wire and cable system; the mica tape layer of the mica tape cable has the functions of electromagnetic shielding and anti-interference, which can reduce high-frequency interference and interference from external signals, thereby improving the reliability of signal transmission. Polyphosphazene has good flame retardant properties, which is mainly due to the phosphorus and nitrogen elements in its molecular structure. These elements can form non-flammable phosphoric acid and nitrogen at high temperatures, thereby preventing the spread of flames and improving the fire safety of cables. Secondly, polyphosphazene also has high thermal stability and can maintain its performance stable under high temperatures and even extreme conditions, which is of great significance for the application of cables in high temperature environments. In addition, polyphosphazene also has excellent electrical properties, such as high insulation strength, low dielectric constant and low dielectric loss, etc. These characteristics make polyphosphazene cables efficient and stable in transmitting electrical energy. Finally, polyphosphazene also has good mechanical properties, such as high strength, high modulus and good wear resistance, etc. These characteristics make the cable have good durability and reliability during use.

[0026] Working principle: When used, Teflon has excellent high temperature resistance, and its use temperature range is wide. It can be used in the temperature range of -100℃ to +260℃, and can even withstand temperatures up to +300℃ for a short time. This allows Teflon cables to maintain stable performance in high temperature environments and are suitable for high temperature workplaces, such as metallurgy, chemical industry, etc.; it has excellent electrical properties, including low dielectric constant, low dielectric loss, high insulation resistance and good arc resistance. These characteristics make Teflon cables widely used in high-frequency signal transmission, high-voltage electrical appliances, electronic equipment, etc.; Teflon has good stability to most chemicals, such as acids, alkalis, greases, solvents, etc., and is not easily corroded. This allows Teflon cables to maintain a long service life in corrosive environments such as chemicals, petroleum, and pharmaceuticals; Teflon has good wear resistance, and it is not easy to get scratches, deformation, etc. even under long-term friction and use. This makes Teflon cables have better durability in occasions where frequent bending or movement is required, such as automobiles, handicrafts, conveying machinery and equipment, etc.; it is easy to process into various shapes and sizes, which is convenient for making various cables and wires. At the same time, the installation and maintenance of Teflon cables are relatively simple, which reduces the cost of use. Aluminum foil can effectively shield electromagnetic interference inside the cable and block the influence of external electromagnetic fields. This helps to improve the quality of cable transmission and ensure that the signal is not interfered with; aluminum foil is lighter and thinner than other shielding materials, which makes the cable more flexible and convenient during wiring and installation. Aluminum foil can also be easily bent and folded to adapt to cables of different shapes; aluminum foil has excellent conductive properties and can effectively disperse and absorb static electricity and electromagnetic radiation in the cable. This helps to protect the signal integrity inside the cable and reduce signal fluctuations and interference; aluminum foil can form a dense aluminum oxide layer during processing, which has excellent anti-corrosion properties. In addition, aluminum originally has good antioxidant properties and can form a dense oxide film in the air to effectively prevent further oxidation reactions. This oxide film can protect the aluminum foil from being corroded by oxygen, moisture, acid and alkali in the atmosphere, thereby extending the service life of the cable; the conductive properties of the aluminum foil can improve the transmission efficiency and stability of wires and cables, prevent wires and cables from aging, and thus extend the service life of wires and cables. Ceramic silicone rubber can quickly form a hard ceramic shell under high-temperature flames, effectively blocking further burning of the flame. This feature enables the cable to maintain the integrity of the line in the event of a fire, reducing the damage to the cable caused by the fire, thereby ensuring the smooth flow of electricity and communications; ceramic silicone rubber does not contain harmful substances such as halogens and heavy metals, and does not produce corrosive and toxic substances when burned, which meets environmental protection requirements. This helps to reduce harm to the environment and human body; ceramic silicone rubber has excellent electrical insulation properties, which can ensure the stability and reliability of the cable during transmission.In addition, it also has low capacitance and inductance performance, which can effectively reduce electromagnetic interference; ceramic silicone rubber can be used continuously in the temperature range of -40℃ to 850℃, maintaining the stable operation of the cable under different temperature environments; ceramic silicone rubber has good processing performance and can be easily made into cables of various shapes and sizes. At the same time, its maintenance is relatively simple, which reduces the cost of use. Polystyrene is an excellent insulating material that can effectively prevent current leakage and electromagnetic interference in the cable and ensure the stability and reliability of cable transmission. This is essential to ensure the safety of power and communications; polystyrene has good physical properties, is not easy to absorb moisture, has excellent low moisture permeability and good moisture resistance. In a humid or underwater environment, polystyrene can effectively protect the cable from moisture erosion and extend the service life of the cable; the density of polystyrene is very small, about 0.03g / cm³, so the cable products made of polystyrene are relatively light, which can reduce transportation costs. In addition, due to its good insulation and moisture resistance, polystyrene cables can reduce energy loss during use and have good energy-saving effects; polystyrene cables can be widely used in the electrical manufacturing industry, such as motor windings, capacitors, transformers, insulation pads, cable outer coatings, etc. Its good performance enables the cable to maintain stable performance in various working environments. The operating temperature range of FEP is wide, and it can be used in the temperature range of -85℃ to 205℃, which makes it very suitable for cables in high temperature environments. Under high temperature conditions, FEP can maintain its excellent performance and ensure the stable operation of the cable; FEP has excellent electrical insulation performance, which can effectively prevent current leakage and electromagnetic interference. This makes FEP cables highly reliable and stable when transmitting signals and data; FEP has good stability to most chemicals and is not easily corroded. This makes FEP cables maintain a long service life in corrosive environments such as chemicals and petroleum; FEP can maintain good performance under long-term light and high temperature conditions and is not prone to aging. This makes FEP cables have a long service life and stable performance. Aromatic sulfone has excellent insulation, which can effectively prevent current leakage and electromagnetic interference, and ensure the stability and reliability of cable transmission; Aromatic sulfone can maintain stable performance in high temperature environments. When heated in hot air at 300℃ for 100 hours, its strength loss is less than 5%. This makes sulfonamide cables suitable for high-temperature working environments; sulfonamides have high flame retardancy, with a limiting oxygen index of more than 30%. At the same time, except for several highly polar solvents and concentrated sulfuric acid, it has good stability to chemicals at room temperature.These characteristics make the sulfone cable have a certain protective effect in the environment of fire or chemical corrosion. Mica tape has good insulation performance, which can effectively isolate the conductors in cables and wires, prevent current leakage and electric shock risks between conductors, and protect the normal operation of cables; mica tape is a very fire-resistant material with excellent fire resistance. In the structure of cables and wires, mica tape can withstand high temperatures, delay the spread of fire, and reduce the damage of fire to the wire and cable system; the mica tape layer of the mica tape cable has electromagnetic shielding and anti-interference functions, which can reduce high-frequency interference and interference from external signals, thereby improving the reliability of signal transmission. Polyphosphazene has good flame retardant properties, which is mainly due to the phosphorus and nitrogen elements in its molecular structure. These elements can form non-flammable phosphoric acid and nitrogen at high temperatures, thereby preventing the spread of flames and improving the fire safety of cables. Secondly, polyphosphazene also has high thermal stability and can maintain its performance stable under high temperatures and even extreme conditions, which is of great significance for the application of cables in high temperature environments. In addition, polyphosphazene also has excellent electrical properties, such as high insulation strength, low dielectric constant and low dielectric loss, etc. These characteristics make polyphosphazene cables efficient and stable in transmitting electrical energy. Finally, polyphosphazene also has good mechanical properties, such as high strength, high modulus and good wear resistance, etc. These characteristics make the cable have good durability and reliability during use.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An armored polyphosphazene insulated power cable, comprising a cable core (6), characterized in that: The cable core (6) comprises a wire core (3), a filling layer (4) and a steel wire rope reinforcing core (10); the steel wire rope reinforcing core (10) is arranged at a central position inside the cable core (6); five wire cores (3) are arranged in an annular shape inside the cable core (6); a filling layer (4) is arranged between the wire core (3) and the steel wire rope reinforcing core (10); the wire core (3) comprises a conductor (1) and a composite insulating shielding layer (2); the conductor (1) is located inside the wire core (3), and the composite insulating shielding layer (2) is located outside the conductor (1); and the outer side of the cable core (6) is provided with An inner lining layer (5) is provided on the outer side of the inner lining layer (5), a composite insulating layer (7) is provided on the outer side of the composite insulating layer (7), a steel wire armor layer (8) is provided on the outer side of the steel wire armor layer (8), an outer sheath (9) is provided on the outer side of the steel wire armor layer (8), the composite insulating shielding layer (2) comprises an inner insulating layer (11) and a shielding layer (12); the inner lining layer (5) comprises a fire-resistant layer (13), a pressure-resistant layer (14), an anti-corrosion layer (15) and a heat-insulating layer (16), and the composite insulating layer (7) comprises a first insulating layer (17), a second insulating layer (18) and a third insulating layer (19).

2. The armored polyphosphazene insulated power cable according to claim 1, characterized in that: The inner insulating layer (11) is located on the inner side of the shielding layer (12); the inner insulating layer (11) is made of Teflon material, and the shielding layer (12) is made of aluminum foil material.

3. The armored polyphosphazene insulated power cable according to claim 1, characterized in that: The fire-resistant layer (13) is located at the outer end of the inner lining layer (5); a pressure-resistant layer (14) is arranged on the inner side of the fire-resistant layer (13); an anti-corrosion layer (15) is arranged on the inner side of the pressure-resistant layer (14); a heat-insulating layer (16) is arranged on the inner side of the anti-corrosion layer (15); the fire-resistant layer (13) is made of ceramic silicone rubber, the pressure-resistant layer (14) is made of polystyrene, the anti-corrosion layer (15) is made of polytetrafluoroethylene propylene, and the heat-insulating layer (16) is made of aromatic sulfone.

4. The armored polyphosphazene insulated power cable according to claim 1, characterized in that: The first insulating layer (17) is located at the outer end of the composite insulating layer (7); a second insulating layer (18) is arranged on the inner side of the first insulating layer (17); a third insulating layer (19) is arranged on the inner side of the second insulating layer (18); the first insulating layer (17) is made of foamed polyethylene, the second insulating layer (18) is made of mica tape, and the third insulating layer (19) is made of polyphosphazene.

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