High-temperature-resistant wire cable and production process

Abstract

The invention relates to the field of high-temperature-resistant wires, particularly discloses a high-temperature-resistant wire cable and a production process, and solves the problems that all strands of wire cores in an existing high-temperature-resistant cable are easy to extrude and wear mutually and the high-temperature-resistant performance is general. The cable comprises a plurality of strands of inner-layer cables, a flexible supporting framework, a flexible supporting pipe, flexible side strips, flexible arc-shaped strips, a support, an inner ceramic fiber heat insulation layer, an inner-layer inert air bag layer, heat insulation strips, an outer-layer inert air bag layer and an air bag, and the outer side of the outer-layer inert air bag layer is sleeved with a magnesium oxide mineral insulation layer. An outer ceramic fiber heat insulation layer is wound and woven on the outer side of the magnesium oxide mineral insulation layer, and the outer side of the outer ceramic fiber heat insulation layer is sleeved and wrapped with a metal armor layer. According to the cable, the high-temperature-resistant effect of the wire cores can be improved, external high temperature can be effectively isolated, and the high-temperature-resistant effect of the cable is improved from the angle of the inner layer and the outer layer.

Description

Technical Field

[0001] The present invention relates to the field of high temperature resistant electric wires, in particular to a high temperature resistant electric wire and cable and a production process. Background Art

[0002] High-temperature-resistant wires and cables are specialized cables capable of reliably transmitting power or signals in harsh environments, exceeding the operating temperature of conventional wires and cables (typically >105°C). They are widely used in high-temperature industrial applications, energy, aerospace, rail transit, and other fields. Their core advantages lie in the high-temperature resistance of their insulation materials, structural stability, and environmental adaptability.

[0003] However, the cores in existing high-temperature resistant wires and cables are all arranged in multiple strands, and the multiple strands are generally isolated and fixed by fillers. However, the fillers are easily deformed and displaced when squeezed, resulting in the strands of cores still being easily squeezed against each other. The squeezing causes friction between the cores and causes wear of the cores. At the same time, the worn cores will also affect the outer insulation layer and thermal insulation layer, causing damage to the cable. At the same time, the cores in existing cables are in indirect contact with the outer cable sheath through physical contact, so there is still a certain heat conduction effect, resulting in the internal cores still being easily heated by conduction, reducing the thermal insulation effect and high-temperature resistance.

[0004] The high-temperature resistant wire and cable with publication number CN116072341A discloses "high-temperature resistant wire and cable, relating to the field of cable technology, including a cable body, the cable body including a cable inner core and an outer protective layer, a heat dissipation cavity is arranged between the outer protective layer and the cable inner core, the inner wall of the heat dissipation cavity is fixedly connected with a plurality of equally distributed separation gaskets, and the separation gaskets divide the heat dissipation cavity into a plurality of cooling cavities; the top of the outer protective layer is fixedly connected with a cooling part for feeding a cooling medium, and the heat dissipation cavity is divided into a plurality of cooling cavities by setting up a plurality of separation gaskets, and the circulation of the cooling medium therein is utilized to cool the cable, thereby improving the high-temperature resistance of the cable; by setting a connecting cavity, the cooling cavities are connected, so that the cooling medium entering can circulate along the cooling cavities and then be discharged from the outlet pipe, thereby ensuring the cooling effect of the cooling medium".

[0005] Although the above technical solution fills the cable with a flowable cooling medium, the cable is a reel. The provision of a circulating cooling medium will undoubtedly significantly increase the cable volume and cost, making it unsuitable for large-scale application. Therefore, a high-temperature resistant wire and cable and a production process are proposed. Summary of the Invention

[0006] In order to overcome the deficiencies of the prior art, the present invention proposes a high-temperature resistant wire and cable and a production process, which can stabilize and effectively protect the core of the cable, while also effectively isolating the external heat and improving the high-temperature resistance of the cable.

[0007] In order to solve the above technical problems, the basic technical solutions proposed by the present invention are: A high-temperature resistant wire and cable, comprising multiple strands of inner cables, a flexible support skeleton being provided at the center of the multiple strands of inner cables, a flexible support tube being provided at the center of the flexible support skeleton, and a plurality of flexible side strips being distributed in an annular array on the outer side of the flexible support tube, the flexible side strips being connected to flexible arc strips at one end away from the flexible support tube, a plurality of supports for supporting the inner cables being distributed in an annular array along the axial direction of each strand of the inner cables between adjacent flexible side strips, and an inner ceramic fiber insulation layer being woven and wrapped around the outer sides of the multiple strands of the inner cables; The outer side of the inner ceramic fiber insulation layer is sheathed with an inner inert air bladder layer, and a plurality of insulation strips are distributed in a ring array on the outer side of the inner inert air bladder layer, and the outer side of the inner inert air bladder layer is connected to the outer side of the insulation strips through the outer side of the inner inert air bladder layer. Each of the insulation strips separates the inner inert air bladder layer and the outer inert air bladder layer into a plurality of air bladders. The outer side of the outer inert air bladder layer is sheathed with a magnesium oxide mineral insulation layer, and the outer side of the magnesium oxide mineral insulation layer is wrapped with an outer ceramic fiber insulation layer, and the outer side of the outer ceramic fiber insulation layer is sheathed with a metal armor layer.

[0008] Preferably, the inner layer cable comprises a wire core, an insulation layer, and a high-temperature resistant silicone layer from the inside to the outside.

[0009] Preferably, the support is located outside the flexible support tube and inside the flexible arc strip. The flexible support tube, flexible side strip and flexible arc strip are all made of silicone rubber-based ceramic filler composite material, and the support is made of high-temperature resistant plastic material.

[0010] Preferably, the flexible support tube is provided with a filling hole penetrating through the surface between adjacent flexible side strips, the support is provided with a through hole, and the flexible support tube is filled with ceramic powder filler.

[0011] Preferably, the outer side of each of the flexible arc-shaped strips is connected to a flexible convex strip, and each of the flexible convex strips is provided with a plurality of slots at equal intervals along the axial direction of the inner cable, and cable ties are bundled in the slots.

[0012] Preferably, a plurality of struts parallel to the axis of the inner cable are distributed in a circular array on the outside of each tie, and the inner ceramic fiber insulation layer is wrapped and woven around the outside of each tie and strut, and the tie and strut are made of flexible graphite tape material.

[0013] Preferably, thorns are evenly spaced and connected to the outer side of each flexible convex strip, the inner ceramic fiber insulation layer is partially embedded in the thorns, and the thorns are made of ceramic material.

[0014] Preferably, a flexible skeleton segment is further provided at one end of the flexible support skeleton, and the length of the flexible skeleton segment is between -CM, rivet holes are provided on the flexible support skeleton and the flexible side strips on the flexible skeleton segment, and a connecting piece is provided between the flexible support skeleton and the flexible side strips on the flexible skeleton segment, the connecting piece is embedded with rivets, and is respectively connected to the flexible support skeletons on both sides and the flexible side strips on the flexible skeleton segment through rivets, the connecting piece is made of graphite material, and the rivets are made of ceramic material.

[0015] A high temperature resistant wire and cable production process comprises the following steps: Step 1: Make a continuous length of flexible support frame: The rubber raw material and the ceramic filler are mixed and then put into an extruder. The mixture is heated and extruded by the extruder. The extruded material is formed into the shape of a flexible support skeleton through a corresponding forming die and continuously extruded to form a continuous length of flexible support skeleton. Step 2: Connect the supports and open the filling holes on the flexible support frame: Use drilling equipment to drill holes at equal intervals on the surface of the flexible support tube between adjacent flexible side strips of the finished flexible support frame, and then thermally connect the supports between the adjacent flexible side strips and the outside of the flexible support tube; Step 3: Bundling the inner cables and the flexible support frame: The flexible support frame is placed in the center, and multiple inner cables are arranged on the outside of the flexible support frame. All of them are continuously transmitted through a conveyor and then stranded through a stranding machine. Step 4: Set of inner ceramic fiber insulation layer: The combined multi-strand inner cable and the flexible support frame are fed into a braiding machine, and ceramic fibers are woven on the surface to form an inner ceramic fiber insulation layer; Step 5: Forming of the inert airbag layer: The inner ceramic fiber insulation layer is fed into a mold, and an inner inert air bag layer is formed on the outer side of the inner ceramic fiber insulation layer by an extruder. Then, insulation strips are promptly laid out in an array on the outer side of the inner inert air bag layer. The layer is then cooled so that the insulation strips can be embedded in the inner inert air bag layer. After cooling, the layer is extruded again and passed through a mold to form an outer inert air bag layer embedded and covered on the outer side of the insulation strips. The air bags formed between the insulation strips are then filled with inert gas. Step 6: Forming of the outer protective layer: The outer inert gas bag layer is passed through an extruder, and the magnesium oxide mineral insulation material is extruded through the extruder to form a magnesium oxide mineral insulation layer on its outside. The magnesium oxide mineral insulation layer is then fed into a braiding machine, and ceramic fibers are continuously woven on its outside to form an outer ceramic fiber insulation layer. Finally, a metal braided mesh is armored on the outside of the outer ceramic fiber insulation layer to form a metal armor layer.

[0016] Preferably, the inert gas filled in step 5 is one of nitrogen, argon, krypton or xenon.

[0017] The beneficial effects of the present invention are: The technical solution of the present invention is to install a flexible support skeleton between multiple inner cables, so that each inner cable can be more stable in the cable and will not produce mutual squeezing and friction. At the same time, it can also avoid direct contact between the cables, so as to further avoid heat conduction between the inner cables. At the same time, an inner ceramic fiber insulation layer and an outer ceramic fiber insulation layer are set on the outside of each inner cable to provide a double-layer insulation effect, which can effectively improve the overall high-temperature resistance of the cable. In addition, air bags filled with inert gas are provided between the inner ceramic fiber insulation layer and the outer ceramic fiber insulation layer, so that the high temperature outside the outer ceramic fiber insulation layer can be effectively blocked by the outer ceramic fiber insulation layer itself and the inert gas, so that the heat of the inner cable is further reduced, thereby effectively improving the overall high-temperature resistance of the cable. 2. The technical solution of the present invention is to arrange a flexible support tube in the center of the flexible support frame, and a plurality of flexible side strips are distributed in an annular array on the outer side of the flexible support tube to facilitate the installation of a support for clamping the inner cable between adjacent flexible side strips, thereby improving the stability of the cable. Through the perforations on the support and the filling holes on the surface of the flexible support tube between adjacent flexible side strips, ceramic micropowder fillers can be filled into the flexible support tube after the cable processing is completed. The ceramic micropowder fillers can pass through the filling holes and perforations to fill the space of the entire inner ceramic fiber insulation layer, thereby further improving the thermal insulation effect on the outer side of the inner cable and improving the overall high temperature resistance effect. 3. The technical solution of the present invention provides a flexible skeleton segment that is the same as the flexible support skeleton structure but shorter than the flexible support skeleton structure, so that when the cable is partially damaged, the segment can be cut off in time and replaced with a flexible skeleton segment. The flexible skeleton segment can be firmly connected to the flexible support skeleton through connecting plates and rivets, and the connection between the inner layer cable and the outer layer structures is connected by existing methods, so that the damaged cable can be repaired in a timely and effective manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a cross-sectional view of the structure of the present invention; Figure 3 This is a schematic diagram of the structure of the ceramic fiber insulation layer of the present invention; Figure 4 This is a schematic structural diagram of the flexible support frame and inner cable of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 Schematic diagram of the relevant structure of the flexible support frame of the present invention; Figure 7 This is a schematic structural diagram of the connection between the flexible support skeleton and the flexible skeleton segment of the present invention; Figure 8 for Figure 7 Enlarged view of point B in the middle.

[0019] Description of reference numerals: 1. Flexible support skeleton; 2. Inner cable; 3. Inner ceramic fiber insulation layer; 4. Inner inert gas bag layer; 5. Insulation strip; 6. Outer inert gas bag layer; 7. Gas bag; 8. Magnesium oxide mineral insulation layer; 9. Outer ceramic fiber insulation layer; 10. Metal armor layer; 11. Support; 12. Perforation; 13. Flexible support tube; 14. Flexible side strip; 15. Flexible arc strip; 16. Filling hole; 17. Flexible convex strip; 18. Slot; 19. Cable tie; 20. Support bar; 21. Protrusion; 22. Flexible skeleton segment; 23. Connecting piece; 24. Rivet; 25. Wire core; 26. Insulation layer; 27. High temperature resistant silicone layer. DETAILED DESCRIPTION

[0020] The following will be combined with the Figure 1 To the attached Figure 8 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort shall fall within the scope of protection of the present invention. Example

[0021] like Figure 1-8 As shown, the present invention discloses a high-temperature resistant wire and cable, comprising a plurality of inner cables 2, a flexible support skeleton 1 being provided at the center of the plurality of inner cables 2, a flexible support tube 13 being provided at the center of the flexible support skeleton 1, and a plurality of flexible side strips 14 being distributed in an annular array on the outer side of the flexible support tube 13, a flexible arc strip 15 being connected to one end of the flexible side strip 14 away from the flexible support tube 13, a plurality of supports 11 for supporting the inner cables 2 being distributed in an annular array along the axial direction of each inner cable 2 between adjacent flexible side strips 14, and an inner ceramic fiber insulation layer 3 being woven and wrapped around the outer side of the plurality of inner cables 2; The spacing of the supports 11 is determined based on the bending requirements of the cable during use. When the bending angle is large, the spacing of the supports 11 can be set larger, while when the bending angle is small, the spacing of the supports 11 can be set relatively small. An inner inert air bladder layer 4 is sheathed on the outer side of the inner ceramic fiber insulation layer 3, and a plurality of insulation strips 5 are distributed in a ring array on the outer side of the inner inert air bladder layer 4. The outer side of the inner inert air bladder layer 4 is connected to the outer side of the insulation strip 5 through the outer side of the insulation strip 5. Each insulation strip 5 separates the inner inert air bladder layer 4 and the outer inert air bladder layer 6 into a plurality of air bladders 7. A magnesium oxide mineral insulation layer 8 is sheathed on the outer side of the outer inert air bladder layer 6. An outer ceramic fiber insulation layer 9 is wrapped and woven around the outer side of the magnesium oxide mineral insulation layer 8, and a metal armor layer 10 is sheathed on the outer side of the outer ceramic fiber insulation layer 9.

[0022] Among them, a plurality of thermal insulation strips 5 are distributed in a circular array between the inner inert air bag layer 4 and the outer inert air bag layer 6, so that the outer inert air bag layer 6 can be effectively supported on the outside of the inner inert air bag layer 4, and a plurality of air bags 7 are formed by the separation of each thermal insulation strip 5. After the cable production and processing is completed, each air bag 7 can be filled with inert gas. During the process of filling the inert gas, the air in the air bag 7 is driven out until the inert gas content in the air bag 7 is not less than 95%.

[0023] The inner cable 2 comprises a core 25, an insulating layer 26 and a high-temperature resistant silicone layer 27 from the inside to the outside, so that the inner cable 2 has preliminary heat insulation and protection capabilities.

[0024] The support 11 is located on the outside of the flexible support tube 13 and the inside of the flexible arc strip 15. The flexible support tube 13, the flexible side strip 14, and the flexible arc strip 15 are all made of silicone rubber-based ceramic filler composite materials. The support 11 is made of high-temperature resistant plastic material. By adopting the above materials, the flexible support skeleton 1 has high heat resistance, and at the same time it has the ability to deform and can rebound after deformation. Example

[0025] like Figure 1-8 As shown, the present invention discloses a high-temperature resistant wire and cable and a production process. Compared with the first embodiment, this embodiment discloses a structure within the flexible support skeleton 1.

[0026] The flexible support tube 13 has a filling hole 16 formed on the surface between the adjacent flexible side strips 14 , and the support 11 has a through hole 12 . The flexible support tube 13 is filled with ceramic powder filler.

[0027] In this way, when the cable is produced, ceramic micropowder filler can be filled into the flexible support tube 13. The ceramic micropowder filler can gradually penetrate and fill the space within the inner ceramic fiber insulation layer 3 through the filling holes 16 and the perforations 12, thereby improving the thermal insulation effect between the strands of inner cables 2. At the same time, the ceramic micropowder filler can also effectively isolate the heat outside the inner ceramic fiber insulation layer 3, further improving the overall high temperature resistance effect. Example

[0028] like Figure 1-8 As shown, the present invention discloses a high-temperature resistant wire and cable and a production process. Compared with the second embodiment, this embodiment discloses a connection structure between the inner cable 2, the flexible support skeleton 1 and the inner ceramic fiber insulation layer 3.

[0029] The outer side of each flexible arc strip 15 is connected to a flexible convex strip 17 . Each flexible convex strip 17 is provided with a plurality of slots 18 at equal intervals along the axial direction of the inner cable 2 . Cable ties 19 are bundled in the slots 18 .

[0030] The setting of the card slot 18 can limit the cable tie 19 to prevent it from moving along the axial direction of the cable, and the cable tie 19 can fix each solid inner cable 2 in each support 11 of the flexible support skeleton 1, thereby improving the stability of the inner cable 2 on the flexible support skeleton 1, that is, it can ensure that each strand of the inner cable 2 will not be squeezed and fitted, and can also improve the stability of the use of the inner cable 2. It can also isolate and arrange each strand of the inner cable 2 to avoid heat conduction and improve heat resistance and heat insulation effects.

[0031] A plurality of struts 20 parallel to the axis of the inner cable 2 are distributed in a circular array on the outside of each tie 19. The inner ceramic fiber insulation layer 3 is wrapped and woven around the outside of each tie 19 and strut 20. The tie ties 19 and struts 20 are made of flexible graphite tape material. The struts 20 can be coordinated with the tie ties 19 to form a layered mesh structure on the outside of the flexible support skeleton 1, which can support and protect the inner cable 2 to avoid excessive extrusion of the inner cable 2 during use, and can also facilitate the inner ceramic fiber insulation layer 3 to be wrapped and woven on its outside.

[0032] Each flexible rib 17 is evenly spaced apart with thorns 21 connected to the outside, and the inner ceramic fiber insulation layer 3 is partially embedded in the thorns 21. The thorns 21 are made of ceramic material. By embedding the inner ceramic fiber insulation layer 3 and the thorns 21, the stability of the inner ceramic fiber insulation layer 3 wound around the outside of the flexible support frame 1 can be improved, thereby avoiding problems such as the inner ceramic fiber insulation layer 3 moving along the axial direction of the cable. Example

[0033] like Figure 1-8As shown, the present invention discloses a high-temperature resistant wire and cable and a production process. Compared with the third embodiment, this embodiment discloses a repair structure after the cable is broken.

[0034] A flexible skeleton segment 22 is also provided at one end of the flexible support skeleton 1, and the length of the flexible skeleton segment 22 is between 10-30CM. Rivet holes are provided on the flexible side strips 14 on the flexible support skeleton 1 and the flexible skeleton segment 22, and a connecting piece 23 is provided between the flexible support skeleton 1 and the flexible side strips 14 on the flexible skeleton segment 22. The connecting piece 23 is embedded with a rivet 24 and is respectively connected to the flexible support skeletons 1 and the flexible side strips 14 on the flexible skeleton segment 22 on both sides through the rivets 24. The connecting piece 23 is made of graphite material and the rivet 24 is made of ceramic material. Except that the flexible skeleton segment 22 is shorter than the flexible support skeleton 1, its main body structure and the structure that can be added to the outside are the same as the flexible support skeleton 1.

[0035] The setting of the flexible skeleton segment 22 allows the segment to be cut off in time and replaced with the flexible skeleton segment 22 when the cable is partially damaged. The flexible skeleton segment 22 can be firmly connected to the flexible support skeleton 1 through the connecting piece 23 and the rivet 24, and the connection between the inner layer cable 2 and the various layers of the outer structure is connected by the existing method, so that the damaged cable can be repaired in time and effectively. Example

[0036] like Figure 1-8 As shown, the present invention discloses a production process for high temperature resistant wires and cables, comprising the following steps: Step 1: Make a continuous length of flexible support frame 1: The rubber raw material and the ceramic filler are mixed and then put into an extruder. The mixture is heated and extruded by the extruder. The extruded material is formed into the shape of the flexible support skeleton 1 through a corresponding forming die and continuously extruded to form a continuous length of the flexible support skeleton 1; Step 2: Connect the support 11 and open the filling hole 16 on the flexible support frame 1: Use drilling equipment to drill holes at equal intervals on the surface of the flexible support tube 13 between adjacent flexible side strips 14 of the finished flexible support frame 1, and then thermally connect the support 11 between the adjacent flexible side strips 14 and the outside of the flexible support tube 13; Step 3: Bundling the inner cable 2 and the flexible support frame 1: The flexible support frame 1 is centered, and multiple inner cables 2 are arranged on the outside of the flexible support frame 1. All of them are continuously transmitted through a conveyor and then stranded through a stranding machine. Step 4: Set the inner ceramic fiber insulation layer 3: The combined multi-strand inner cable 2 and the flexible support frame 1 are fed into a braiding machine, and ceramic fibers are woven on the surface to form an inner ceramic fiber insulation layer 3; Step 5: Forming of the inert airbag layer: The inner ceramic fiber insulation layer 3 is fed into a mold, and an inner inert air bag layer 4 is formed on the outer side of the inner ceramic fiber insulation layer 3 by an extruder. Then, insulation strips 5 are promptly laid in an array on the outer side of the inner inert air bag layer 4. The mold is then cooled so that the insulation strips 5 can be embedded in the inner inert air bag layer 4. After cooling, the mold is extruded again and formed into an outer inert air bag layer 6 embedded and covering the outer side of the insulation strips 5. Then, the air bags 7 formed between the insulation strips 5 are filled with inert gas. Step 6: Forming of the outer protective layer: The outer inert gas bag layer 6 is passed through an extruder, and the magnesium oxide mineral insulation material is extruded by the extruder to form a magnesium oxide mineral insulation layer 8 on its outside. The magnesium oxide mineral insulation layer 8 is then fed into a braiding machine, and ceramic fibers are further braided on its outside to form an outer ceramic fiber insulation layer 9. Finally, a metal braided mesh is armored on the outside of the outer ceramic fiber insulation layer 9 to form a metal armor layer 10.

[0037] The inert gas filled in step 5 is one of nitrogen, argon, krypton or xenon.

[0038] This makes each strand of inner cable 2 more stable in the cable, and does not produce mutual squeezing and friction. At the same time, it can also avoid direct contact between each strand of inner cable 2, so as to further avoid heat conduction between each strand of inner cable 2. At the same time, an inner ceramic fiber insulation layer 3 and an outer ceramic fiber insulation layer 9 are set on the outside of each strand of inner cable 2 to provide a double-layer insulation effect, which can effectively improve the overall high-temperature resistance of the cable. In addition, an air bag 7 filled with inert gas is provided between the inner ceramic fiber insulation layer 3 and the outer ceramic fiber insulation layer 9, so that the high temperature outside the outer ceramic fiber insulation layer 9 can be effectively blocked by itself and the inert gas, so that the heat of the inner cable 2 is further reduced, and the overall high-temperature resistance of the cable is effectively improved.

[0039] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A high temperature resistant wire and cable, comprising a plurality of inner cables (2), characterized in that: A flexible support frame (1) is provided at the center of the multiple strands of inner layer cables (2), a flexible support tube (13) is provided at the center of the flexible support frame (1), and a plurality of flexible side strips (14) are distributed in a circular array on the outer side surface of the flexible support tube (13), one end of the flexible side strip (14) away from the flexible support tube (13) is connected to a flexible arc strip (15), and a plurality of supports (11) for supporting the inner layer cables (2) are distributed in a circular array along the axial direction of each strand of the inner layer cables (2) between adjacent flexible side strips (14), and an inner ceramic fiber insulation layer (3) is woven and wound around the outer sides of the multiple strands of the inner layer cables (2); The outer side of the inner ceramic fiber thermal insulation layer (3) is sheathed with an inner inert gas bag layer (4), and a plurality of thermal insulation strips (5) are distributed in a ring array on the outer side of the inner inert gas bag layer (4), and the outer side of the inner inert gas bag layer (4) is connected to the outer side of the thermal insulation strip (5) via the outer side of the inner inert gas bag layer (4) and the outer inert gas bag layer (6), and each of the thermal insulation strips (5) separates the inner inert gas bag layer (4) and the outer inert gas bag layer (6) into a plurality of gas bags (7), and the outer side of the outer inert gas bag layer (6) is sheathed with a magnesium oxide mineral insulation layer (8), and the outer side of the magnesium oxide mineral insulation layer (8) is wrapped with an outer ceramic fiber thermal insulation layer (9), and the outer side of the outer ceramic fiber thermal insulation layer (9) is sheathed with a metal armor layer (10).

2. A high temperature resistant wire and cable according to claim 1, characterized in that: The inner layer cable (2) comprises, from the inside to the outside, a wire core (25), an insulating layer (26), and a high-temperature resistant silicone layer (27).

3. A high temperature resistant wire and cable according to claim 1, characterized in that: The support (11) is located outside the flexible support tube (13) and inside the flexible arc strip (15); the flexible support tube (13), the flexible side strip (14), and the flexible arc strip (15) are all made of a silicone rubber-based ceramic filler composite material; and the support (11) is made of a high-temperature resistant plastic material.

4. A high temperature resistant wire and cable according to claim 1, characterized in that: The flexible support tube (13) is provided with a filling hole (16) penetrating the surface between adjacent flexible side strips (14), the support (11) is provided with a through hole (12), and the flexible support tube (13) is filled with ceramic micro-powder filler.

5. The high temperature resistant wire and cable according to claim 1, characterized in that: The outer side of each flexible arc strip (15) is connected to a flexible convex strip (17), and each flexible convex strip (17) is provided with a plurality of slots (18) at equal intervals along the axial direction of the inner cable (2), and a cable tie (19) is bundled in the slots (18).

6. A high temperature resistant wire and cable according to claim 1, characterized in that: A plurality of struts (20) parallel to the axis of the inner layer cable (2) are arranged in a circular array on the outside of each of the tie straps (19). The inner ceramic fiber insulation layer (3) is wrapped and woven around the outside of each tie strap (19) and the struts (20). The tie straps (19) and the struts (20) are made of flexible graphite tape material.

7. A high temperature resistant wire and cable according to claim 6, characterized in that: Each flexible convex strip (17) is evenly spaced and connected to the outside with thorns (21), the inner ceramic fiber heat insulation layer (3) is partially embedded in the thorns (21), and the thorns (21) are made of ceramic material.

8. The high temperature resistant wire and cable according to claim 1, characterized in that: One end of the flexible support frame (1) is further provided with a flexible frame segment (22), and the length of the flexible frame segment (22) is between 10-30CM. Rivet holes are provided on the flexible side strips (14) on the flexible support frame (1) and the flexible frame segment (22), and a connecting piece (23) is provided between the flexible support frame (1) and the flexible side strips (14) on the flexible frame segment (22). The connecting piece (23) is embedded with a rivet (24) and is connected to the flexible side strips (14) on the flexible support frame (1) and the flexible frame segment (22) on both sides through the rivet (24). The connecting piece (23) is made of graphite material, and the rivet (24) is made of ceramic material.

9. A process for producing high-temperature resistant wires and cables, based on a high-temperature resistant wire and cable according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Make a continuous length of flexible support frame (1): The rubber raw material and the ceramic filler are mixed and then put into an extruder, the mixed material is heated and extruded by the extruder, and the extruded material is formed into the shape of the flexible support skeleton (1) through a corresponding forming die, and is continuously extruded to form a continuous length of the flexible support skeleton (1); Step 2: Connect the support (11) and open the filling hole (16) on the flexible support frame (1): Using a drilling device, holes are drilled at equal intervals on the surface of the flexible support tube (13) between adjacent flexible side strips (14) of the finished flexible support frame (1), and then the support (11) is thermally connected between the adjacent flexible side strips (14) and the outer side of the flexible support tube (13); Step 3: Bundling the inner cable (2) and the flexible support frame (1): The flexible support frame (1) is centered, and multiple inner cables (2) are arranged outside the flexible support frame (1), and all of them are continuously transmitted through a conveyor and then stranded through a stranding machine; Step 4: Installation of the inner ceramic fiber insulation layer (3): The combined multi-strand inner cable (2) and the flexible support frame (1) are fed into a braiding machine, and ceramic fibers are woven on the surface thereof to form an inner ceramic fiber insulation layer (3); Step 5: Forming of the inert airbag layer: The inner ceramic fiber insulation layer (3) is fed into the mold, and an inner inert air bag layer (4) is formed on the outer side of the inner ceramic fiber insulation layer (3) by an extruder, and then insulation strips (5) are promptly laid in an array on the outer side of the inner inert air bag layer (4), and then cooled so that the insulation strips (5) can be embedded in the inner inert air bag layer (4), and then after cooling, it is passed through the extruder again and formed through the mold to form an outer inert air bag layer (6) embedded and covered on the outer side of the insulation strips (5), and then the air bags (7) formed between the insulation strips (5) are filled with inert gas; Step 6: Forming of the outer protective layer: The outer inert gas bag layer (6) is passed through an extruder, and the magnesium oxide mineral insulation material is extruded by the extruder to form a magnesium oxide mineral insulation layer (8) on the outer side thereof. The magnesium oxide mineral insulation layer (8) is then fed into a braiding machine, and ceramic fibers are continuously braided on the outer side thereof to form an outer ceramic fiber thermal insulation layer (9). Finally, a metal braided mesh is armored on the outer side of the outer ceramic fiber thermal insulation layer (9) to form a metal armor layer (10).

10. A high temperature resistant wire and cable production process according to claim 9, characterized in that: The inert gas filled in step 5 is one of nitrogen, argon, krypton or xenon.

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