A high temperature resistant composite cable and its preparation method

Abstract

The present invention discloses a high-temperature resistant composite cable and a preparation method thereof, which relates to the technical field of composite cables. The high-temperature resistant composite cable includes a cable mechanism, an auxiliary mechanism is provided on the cable mechanism, the cable mechanism includes an insulating layer, a protective layer is provided inside the insulating layer, a plurality of separator strips are fixed on the inner wall of the first protective layer at equal intervals, a flame retardant block is provided between two adjacent separator strips, the auxiliary mechanism includes four mounting holes and two circular ring blocks, the inner wall of each mounting hole is provided with an anti-slip ring, the inner wall of each mounting hole is provided with an anti-slip ring, and the opposite sides of the two circular ring blocks are bonded with an adhesive layer. By providing a protective layer and an auxiliary mechanism, the present invention can improve the fire protection performance of the high-temperature resistant composite cable, that is, it can ensure that the high-temperature resistant composite cable can work normally even in the event of a fire, and supply power to key facilities such as fire protection systems and emergency communication systems.

Description

Technical Field

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

[0002] A composite cable is a cable that combines multiple different types of cables to meet the needs of specific applications. In order to improve the reliability, safety and service life of existing composite cables in harsh environments, composite cables are generally equipped with a first high-temperature resistant layer.

[0003] In actual use, although the existing high-temperature resistant composite cables can adapt to harsh environments, improve installation performance and extend service life, their fire protection performance is poor. When the high-temperature resistant composite cables are exposed to the environment and encounter a fire, the high-temperature resistant composite cables with poor fire protection performance will be damaged, which will cause key facilities such as fire protection systems and emergency communication systems that require power supply to be unable to work, which increases the probability of fire harming people, reduces the use effect of the high-temperature resistant composite cables, and reduces the use efficiency of the high-temperature resistant composite cables.

[0004] Therefore, we propose a high temperature resistant composite cable and a preparation method thereof in order to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-temperature resistant composite cable and a preparation method thereof, so as to solve the problem proposed in the above background technology that the existing high-temperature resistant composite cable has poor fire protection performance. When the high-temperature resistant composite cable is exposed to the environment and encounters a fire, the high-temperature resistant composite cable with poor fire protection performance will be damaged, which will cause key facilities such as fire protection systems and emergency communication systems that require power supply to fail to work, thereby increasing the probability of fire harming people, reducing the use effect of the high-temperature resistant composite cable, and reducing the use efficiency of the high-temperature resistant composite cable.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a high-temperature resistant composite cable, comprising a cable mechanism, wherein the cable mechanism is provided with an auxiliary mechanism;

[0007] The cable mechanism comprises an insulating layer, wherein a protective layer is provided inside the insulating layer;

[0008] The protective layer includes a first protective layer, a plurality of spacer strips are fixed to the inner wall of the first protective layer at equal intervals, a plurality of first cylindrical holes are opened on the surface of each spacer strip at equal intervals, a second protective layer is arranged inside the first protective layer, and a flame retardant block is arranged between two adjacent spacer strips;

[0009] The auxiliary mechanism includes four mounting holes and two circular blocks. The inner wall of each mounting hole is provided with an anti-slip ring. The opposite sides of the two circular blocks are bonded with an adhesive layer. Four connecting rods are evenly distributed and fixed on the opposite side of each circular block. The outer surface of each connecting rod is provided with an annular groove near the edge.

[0010] Preferably, the arc surfaces of the plurality of separating soft strips are fixed to the outer wall of the second protective layer, and the eight connecting rods are divided into two groups. The opposite ends of the two groups of connecting rods are movable through the opposite sides of the two adhesive layers.

[0011] Preferably, each of the connecting rods is located inside each mounting hole, each of the anti-slip rings is fixedly sleeved inside each annular groove, and the outer wall of the first protective layer is sleeved with the inner wall of the insulating layer.

[0012] Preferably, the four mounting holes are equidistantly distributed on one side of the insulating layer, and the opposite sides of the two adhesive layers are respectively bonded to the two sides of the first protective layer, the two sides of each separating soft strip, the two sides of the second protective layer and the two sides of each flame retardant block.

[0013] Preferably, the interior of the protective layer is covered with a sheath, the inner wall of the first protective layer is covered with the outer wall of the sheath, a plurality of second cylindrical holes are equidistantly distributed on one side of the sheath, a steel wire rope is provided inside each of the second cylindrical holes, and the interior of the sheath is covered with a water-blocking layer.

[0014] Preferably, a first shielding layer is provided inside the water-blocking layer, a first high-temperature resistant layer is provided inside the first shielding layer, a plurality of connecting strips are fixed on the inner wall of the first high-temperature resistant layer at equal intervals, and a first filling block is provided between the outer surfaces of two adjacent connecting strips.

[0015] Preferably, an insulating buffer frame is fixed between the arc surfaces of the plurality of connecting strips, and a plurality of semicircular rings are fixed on the outer wall of the insulating buffer frame at equal intervals, and each of the semicircular rings is located between the outer surfaces of each two adjacent connecting strips.

[0016] Preferably, each of the semicircular rings is located on the inner wall arc surface of each first filling block, a second filling block is provided inside each of the semicircular rings, and a third filling block is provided inside three through holes of the insulating buffer frame.

[0017] Preferably, optical fibers, copper cores and power cords are respectively arranged inside the other three through holes of the insulating buffer frame, and the optical fibers, copper cores and power cords are respectively arranged in an interlaced manner with the three third filling blocks. A reinforcing core is provided inside the middle through hole of the insulating buffer frame, and the outer wall of the insulating layer is provided with a second high-temperature resistant layer, the outer wall of the second high-temperature resistant layer is provided with a second shielding layer, the outer wall of the second shielding layer is provided with a corrosion-resistant layer, and the outer wall of the corrosion-resistant layer is provided with a wear-resistant layer.

[0018] A method for preparing a high-temperature resistant composite cable comprises the following steps:

[0019] S1. When a high-temperature resistant composite cable needs to be prepared, the materials are prepared first, and appropriate optical fibers, copper cores, reinforcing cores, and power cords are selected as needed. Then, one end of the optical fiber, one end of the copper core, one end of the reinforcing core, and one end of the power cord are simultaneously driven by the device. Then, a layer consisting of an insulating buffer frame, a semicircular ring, a connecting strip, and a first high-temperature resistant layer is extruded between the outer surfaces of the driven optical fiber, copper core, reinforcing core, and power cord using an extruder. When the layer is cooled to a suitable temperature;

[0020] S2. Injecting a first filling block, a second filling block, and a third filling block into the layer body in sequence. After the first filling block, the second filling block, and the third filling block are filled, directly adding a first shielding layer to the outer wall of the first high-temperature resistant layer in the layer body. After the first shielding layer is added, extruding a water-blocking layer from the outer wall of the first shielding layer using an extruder. After the water-blocking layer is cooled to a suitable temperature, extruding a sheath from the outer wall of the water-blocking layer using an extruder. Then, installing a steel wire rope on each second cylindrical hole in the sheath.

[0021] S3, then add a protective layer consisting of a flame retardant block, a first protective layer, a separator strip and a second protective layer on the outer surface of the sheath, and finally extrude an insulating layer on the outer wall of the protective layer using an extruder;

[0022] S4. After the extrusion operation of the insulating layer is completed, the second high-temperature resistant layer is extruded on the outer wall of the insulating layer by using an extruder, and then the second shielding layer is added to the outer wall of the second high-temperature resistant layer. Then, the corrosion-resistant layer is extruded on the outer wall of the second shielding layer by using an extruder, and finally, the wear-resistant layer is extruded on the outer wall of the corrosion-resistant layer by using an extruder to make a high-temperature resistant composite cable.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. By setting up a protective layer and auxiliary mechanisms, the fire resistance performance of the high-temperature resistant composite cable can be improved, that is, it can ensure that the high-temperature resistant composite cable can work normally even in the event of a fire, and supply power to key facilities such as the fire protection system and the emergency communication system. When a fire occurs, the first protective layer can provide a layer of protection for the cable. Subsequently, the flame retardant block, the separation strip and the first cylindrical hole can be used to reduce the combustion intensity of the high-temperature resistant composite cable, thereby playing a role in fire extinguishing. At the same time, the adhesive layer, the circular ring block, the connecting rod, the mounting hole, the annular groove and the anti-slip ring can prevent the melted flame retardant block from flowing away from both ends of the cable.

[0025] 2. By setting up a cable mechanism, it can ensure that the optical fiber, copper core and power line in the high-temperature resistant composite cable can work normally. When the high-temperature resistant composite cable is exposed to the environment and subjected to a large extrusion force brought by components or equipment, the cooperation of the insulating buffer frame, semicircular block, first filler block, second filler block and third filler block can improve the anti-extrusion ability of the high-temperature resistant composite cable;

[0026] 3. When the high-temperature resistant composite cable is subject to external electromagnetic interference and contacts water, the cooperation of the water-blocking layer, the first shielding layer and the second shielding layer can be used to prevent water and electromagnetic waves from contacting the optical fiber, copper core and power line inside the cable. When the high-temperature resistant composite cable needs to be pulled, the cooperation of the steel wire rope, the insulation layer and the reinforcing core can be used to prevent the high-temperature resistant composite cable from breaking during the pulling process. When the high-temperature resistant composite cable is exposed to the environment and is exposed to sunlight, the cooperation of the first high-temperature resistant layer and the second high-temperature resistant layer can be used to prevent the temperature generated by sunlight on the high-temperature resistant composite cable from being transferred to the optical fiber, copper core and power line inside the high-temperature resistant composite cable, thereby ensuring the normal operation of the high-temperature resistant composite cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a partial structural schematic diagram of a high-temperature resistant composite cable of the present invention;

[0028] Figure 2 This is a partially cutaway perspective view of a high-temperature resistant composite cable according to the present invention;

[0029] Figure 3 A high temperature resistant composite cable of the present invention Figure 2 A in the middle is an enlarged stereogram;

[0030] Figure 4 This is a partial three-dimensional diagram of the protective layer of a high-temperature resistant composite cable of the present invention;

[0031] Figure 5 This is a partial three-dimensional diagram of the auxiliary mechanism of a high-temperature resistant composite cable of the present invention;

[0032] Figure 6 This is a three-dimensional diagram of a high-temperature resistant composite cable of the present invention;

[0033] Figure 7 This is a partial perspective view of the cable mechanism of a high-temperature resistant composite cable of the present invention;

[0034] Figure 8 This is a schematic diagram of the three-dimensional structure of the sheath and the second cylindrical hole of a high-temperature resistant composite cable of the present invention.

[0035] In the picture:

[0036] 1. Cable structure; 101. Insulation layer; 102. Protective layer; 1021. First protective layer; 1022. Separating strip; 1023. First cylindrical hole; 1024. Second protective layer; 1025. Flame retardant block; 103. Jacket; 104. Second cylindrical hole; 105. Steel wire rope; 106. Water-blocking layer; 107. First shielding layer; 108. First high-temperature resistant layer; 109. Connecting strip; 110. First filling block; 111. Insulation buffer Punch frame; 112, semicircular ring; 113, second filling block; 114, third filling block; 115, optical fiber; 116, copper core; 117, reinforcing core; 118, power cord; 119, second high-temperature resistant layer; 120, second shielding layer; 121, corrosion-resistant layer; 122, wear-resistant layer; 3, auxiliary mechanism; 301, mounting hole; 302, anti-slip ring; 303, circular ring block; 304, adhesive layer; 305, connecting rod; 306, annular groove. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] Reference Figures 1-8 As shown: A high temperature resistant composite cable, comprising a cable mechanism 1, on which an auxiliary mechanism 3 is provided;

[0039] The cable mechanism 1 comprises an insulating layer 101, and a protective layer 102 is sheathed inside the insulating layer 101;

[0040] The protective layer 102 includes a first protective layer 1021 , on the inner wall of which a plurality of spacer strips 1022 are fixed at equal intervals. Each spacer strip 1022 has a plurality of first cylindrical holes 1023 formed on its surface at equal intervals. A second protective layer 1024 is provided inside the first protective layer 1021 , and a flame retardant block 1025 is provided between each adjacent spacer strip 1022 .

[0041] The auxiliary mechanism 3 includes four mounting holes 301 and two circular blocks 303. The inner wall of each mounting hole 301 is provided with an anti-slip ring 302. The opposite sides of the two circular blocks 303 are bonded with an adhesive layer 304. Four connecting rods 305 are evenly distributed and fixed on the opposite side of each circular block 303. The outer surface of each connecting rod 305 is provided with an annular groove 306 near the edge.

[0042] according to Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the arc surfaces of multiple separating soft strips 1022 are fixed to the outer wall of the second protective layer 1024, and the eight connecting rods 305 are divided into two groups. The opposite ends of the two groups of connecting rods 305 are movable through the opposite sides of the two adhesive layers 304, so that the stability of the circular ring block 303 after fixation can be improved under the cooperation of the connecting rods 305, the annular groove 306, the anti-slip ring 302 and the mounting hole 301. At the same time, under the action of the separating soft strips 1022, the first protective layer 1021 and the second protective layer 1024 can be connected together.

[0043] according to Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 and Figure 6 As shown, each connecting rod 305 is respectively located inside each mounting hole 301, and each anti-slip ring 302 is respectively fixedly sleeved inside each annular groove 306. The outer wall of the first protective layer 1021 is sleeved with the inner wall of the insulating layer 101, so that under the action of the insulating layer 101, the wear resistance of the high-temperature resistant composite cable can be improved, that is, the service life of the high-temperature resistant composite cable can be improved. At the same time, under the action of the anti-slip ring 302, the friction between the connecting rod 305 and the mounting hole 301 can be improved.

[0044] according to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown, four mounting holes 301 are equidistantly distributed on one side of the insulating layer 101, and the opposite sides of the two adhesive layers 304 are respectively bonded to the two sides of the first protective layer 1021, the two sides of each separating soft strip 1022, the two sides of the second protective layer 1024 and the two sides of each flame retardant block 1025. Under the action of the flame retardant block 1025, the fire resistance of the high-temperature resistant composite cable can be improved.

[0045] according to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 8 As shown, the interior of the protective layer 102 is provided with a sheath 103, the inner wall of the first protective layer 1021 is sheathed with the outer wall of the sheath 103, and a plurality of second cylindrical holes 104 are equidistantly distributed on one side of the sheath 103. A steel wire rope 105 is provided inside each second cylindrical hole 104, and a water-blocking layer 106 is provided inside the sheath 103. Under the action of the water-blocking layer 106, the waterproof ability of the high-temperature resistant composite cable can be improved, and at the same time, under the action of the steel wire rope 105, the tensile effect of the high-temperature resistant composite cable can be improved.

[0046] according to Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 and Figure 7 As shown, the interior of the water-blocking layer 106 is provided with a first shielding layer 107, and the interior of the first shielding layer 107 is provided with a first high-temperature resistant layer 108. A plurality of connecting strips 109 are evenly distributed and fixed on the inner wall of the first high-temperature resistant layer 108, and a first filling block 110 is provided between the outer surfaces of two adjacent connecting strips 109, so that with the cooperation of the first filling block 110 and the second filling block 113, the stability of the first high-temperature resistant layer 108, the connecting strip 109, the insulating buffer frame 111 and the semicircular ring 112 after connection can be improved.

[0047] according to Figure 1 、 Figure 2 、 Figure 3 and Figure 7 As shown, an insulating buffer frame 111 is fixed between the arc surfaces of multiple connecting bars 109, and multiple semicircular rings 112 are fixed on the outer wall of the insulating buffer frame 111 at equal intervals. Each semicircular ring 112 is located between the outer surfaces of each adjacent two connecting bars 109, so that the second filling block 113 can be prevented from moving in position under the cooperation of the connecting bar 109 and the insulating buffer frame 111.

[0048] according to Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 and Figure 7As shown, each semicircular ring 112 is located on the inner wall arc surface of each first filling block 110, and a second filling block 113 is arranged inside each semicircular ring 112. Three through holes of the insulating buffer frame 111 are each provided with a third filling block 114. Under the action of the third filling block 114, the buffering capacity of the insulating buffer frame 111 can be improved.

[0049] according to Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 and Figure 7 As shown, the other three through holes of the insulating buffer frame 111 are respectively provided with optical fibers 115, copper cores 116 and power lines 118, and the optical fibers 115, copper cores 116 and power lines 118 are respectively arranged in an interlaced manner with the three third filling blocks 114. A reinforcing core 117 is provided in the middle through hole of the insulating buffer frame 111, and the outer wall of the insulating layer 101 is provided with a second high-temperature resistant layer 119, and the outer wall of the second high-temperature resistant layer 119 is provided with a second shielding layer 120, and the outer wall of the second shielding layer 120 is provided with a corrosion-resistant layer 121, and the outer wall of the corrosion-resistant layer 121 is provided with a wear-resistant layer 122. Under the action of the wear-resistant layer 122, the wear resistance of the high-temperature resistant composite cable can be improved, thereby improving the service life of the high-temperature resistant composite cable. At the same time, under the action of the reinforcing core 117, the tensile performance of the high-temperature resistant composite cable can be further improved.

[0050] In the present invention, when it is necessary to use a high-temperature resistant composite cable, the high-temperature resistant composite cable is first cut off using a tool according to the required length, and then the adhesive layer 304 is bonded and connected to the two circular ring blocks 303 respectively, and then the anti-slip ring 302 is installed on each annular groove 306, and then one of the circular ring blocks 303 is moved. At this time, the moving circular ring block 303 will directly use the connecting rod 305 connected to it to move each corresponding anti-slip ring 302 to the inside of the corresponding mounting hole 301, and at the same time, the moving circular ring block 303 will also drive the adhesive layer 304 connected to it to move. When each anti-slip ring 302 is just completely moved to the inside of the corresponding mounting hole 301, the circular ring block 303 is The ring block 303 just seals one end of the high-temperature resistant composite cable, and then repeats the above steps, moving another circular ring block 303 until the other end of the high-temperature resistant composite cable is just sealed. When everything is ready, directly connect the two ends of the optical fiber 115, the two ends of the copper core 116 and the two ends of the power line 118 on the high-temperature resistant composite cable to the corresponding equipment or components, and then use it. When the high-temperature resistant composite cable is exposed to the environment and is subjected to a large extrusion force brought by components or equipment, the cooperation of the insulating buffer frame 111, the semicircular ring 112, the first filling block 110, the second filling block 113 and the third filling block 114 can greatly improve the anti-extrusion performance of the high-temperature resistant composite cable. force, that is, to avoid damage to the optical fiber 115, the copper core 116 and the power cord 118, that is, to improve the service life of the high-temperature resistant composite cable. When the high-temperature resistant composite cable is subjected to external electromagnetic interference and contacts water, at this time, with the cooperation of the water-blocking layer 106, the second shielding layer 120 and the first shielding layer 107, the internal optical fiber 115, the copper core 116 and the power cord 118 of the high-temperature resistant composite cable can be guaranteed to be used normally. When a fire occurs, the wear-resistant layer 122 of the high-temperature resistant composite cable will first be melted by heat, and then the corrosion-resistant layer 121 will also be melted by heat, and then the second shielding layer 120 will also be damaged by heat, and then the second high-temperature resistant layer 119 will also be melted, and then the insulating layer 101 will also be melted by heat. When the flame retardant block 10 When the hydrogel 25 comes into contact with the flame, it can quickly absorb heat and evaporate water, thereby reducing the burning intensity of the high-temperature resistant composite cable and playing a role in extinguishing the fire. At the same time, under the action of the first cylindrical hole 1023, it can ensure that the outer wall of the second protective layer 1024 can be covered with the melted flame retardant block 1025 liquid. At the same time, under the action of the first high-temperature resistant layer 108, it can also prevent the heat generated by the fire from being transferred to the position of the optical fiber 115, the copper core 116 and the power line 118 through heat transfer, that is, the high-temperature resistant composite cable can continue to work normally in emergency situations such as fire. When the high-temperature resistant composite cable needs to be pulled, at this time, with the cooperation of the steel wire rope 105, the insulating layer 101 and the reinforcing core 117,The tensile strength of the high-temperature resistant composite cable can be improved. When the high-temperature resistant composite cable is exposed to sunlight in an environment and is not affected by fire, the first high-temperature resistant layer 108 and the second high-temperature resistant layer 119 can cooperate to prevent the temperature generated by sunlight on the high-temperature resistant composite cable from being transferred to the optical fiber 115, copper core 116 and power line 118 inside the high-temperature resistant composite cable, thereby ensuring the normal operation of the high-temperature resistant composite cable.

[0051] The wear-resistant layer 122 is made of base resin, high-density polyethylene, modified additives, tar, antioxidant, silicone resin and whiskers according to the application scenario of the cable;

[0052] Flame retardant block 1025 is a hydrogel, a hydrophilic polymer with a three-dimensional network structure that can swell in water and retain a large amount of water. It is solid at room temperature, but has good flexibility and can be shaped and deformed as needed. When the hydrogel is exposed to high temperatures, it gradually melts into a liquid state.

[0053] The water-blocking layer 106 is high-density polyethylene, which is a thermoplastic resin made by polymerizing ethylene;

[0054] The first shielding layer 107 and the second shielding layer 120 are both aluminum foils, which have good electrical conductivity and can effectively reflect and shield electromagnetic waves;

[0055] The first high temperature resistant layer 108 and the second high temperature resistant layer 119 are made of high temperature resistant rubber, which is a rubber material that can maintain its physical properties and chemical stability in high temperature environments. It has good heat resistance, corrosion resistance, oil resistance and cold resistance.

[0056] The first filler block 110 , the second filler block 113 and the third filler block 114 are generally composed of polyethylene insulation material, tensile filler and steel strips;

[0057] The reinforcing core 117 is generally made of high-strength glass fiber. High-strength glass fiber is a high-performance fiber material made by melting glass raw materials at high temperatures and then drawing them into fine fibers. Compared with ordinary glass fiber, high-strength glass fiber has higher tensile strength, better corrosion resistance and lower expansion coefficient.

[0058] The adhesive layer 304 is a special adhesive for cables;

[0059] The insulation layer 101 is made of cross-linked polyethylene (XLPE): XLPE is a cross-linked polyethylene material with excellent insulation performance, heat resistance and chemical corrosion resistance;

[0060] The corrosion-resistant layer 121 is polypropylene (PP), which is a thermoplastic polymer made from propylene monomers through polymerization.

[0061] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high temperature resistant composite cable, comprising a cable mechanism (1), characterized in that: The cable mechanism (1) is provided with an auxiliary mechanism (3); The cable mechanism (1) comprises an insulating layer (101), wherein a protective layer (102) is provided inside the insulating layer (101); The protective layer (102) comprises a first protective layer (1021), a plurality of separating soft strips (1022) are fixed to the inner wall of the first protective layer (1021) at equal intervals, a plurality of first cylindrical holes (1023) are opened on the surface of each separating soft strip (1022) at equal intervals, a second protective layer (1024) is provided inside the first protective layer (1021), and a flame retardant block (1025) is provided between two adjacent separating soft strips (1022); The auxiliary mechanism (3) comprises four mounting holes (301) and two annular blocks (303), the inner wall of each mounting hole (301) is provided with an anti-slip ring (302), the opposite sides of the two annular blocks (303) are bonded with an adhesive layer (304), the opposite side of each annular block (303) is fixed with four connecting rods (305) distributed at equal intervals, and the outer surface of each connecting rod (305) is provided with an annular groove (306) near the edge; The arc surfaces of the plurality of separating soft strips (1022) are fixed to the outer wall of the second protective layer (1024), and the eight connecting rods (305) are divided into two groups. The opposite ends of the two groups of connecting rods (305) are movable through the opposite sides of the two adhesive layers (304). Each of the connecting rods (305) is located inside each mounting hole (301), each of the anti-slip rings (302) is fixedly sleeved inside each annular groove (306), and the outer wall of the first protective layer (1021) is sleeved with the inner wall of the insulating layer (101); The four mounting holes (301) are equidistantly distributed on one side of the insulating layer (101), and the opposite sides of the two adhesive layers (304) are respectively bonded to the two sides of the first protective layer (1021), the two sides of each separating soft strip (1022), the two sides of the second protective layer (1024), and the two sides of each flame retardant block (1025).

2. The high temperature resistant composite cable according to claim 1, characterized in that: The interior of the protective layer (102) is provided with a protective sheath (103), the inner wall of the first protective layer (1021) is provided with the outer wall of the protective sheath (103), a plurality of second cylindrical holes (104) are evenly distributed on one side of the protective sheath (103), a steel wire rope (105) is provided inside each of the second cylindrical holes (104), and the interior of the protective sheath (103) is provided with a water-blocking layer (106).

3. The high temperature resistant composite cable according to claim 2, characterized in that: The water-blocking layer (106) is sheathed with a first shielding layer (107), the first shielding layer (107) is sheathed with a first high-temperature resistant layer (108), a plurality of connecting strips (109) are fixed and distributed at equal intervals on the inner wall of the first high-temperature resistant layer (108), and a first filling block (110) is provided between the outer surfaces of two adjacent connecting strips (109).

4. The high temperature resistant composite cable according to claim 3, characterized in that: An insulating buffer frame (111) is fixed between the arc surfaces of the plurality of connecting bars (109), and a plurality of semicircular rings (112) are fixed to the outer wall of the insulating buffer frame (111) at equal intervals, and each semicircular ring (112) is located between the outer surfaces of each two adjacent connecting bars (109).

5. The high temperature resistant composite cable according to claim 4, characterized in that: Each of the semicircular rings (112) is located on the inner wall arc surface of each first filling block (110), a second filling block (113) is provided inside each of the semicircular rings (112), and a third filling block (114) is provided inside three through holes of the insulating buffer frame (111).

6. The high temperature resistant composite cable according to claim 5, characterized in that: The other three through holes of the insulating buffer frame (111) are respectively provided with optical fibers (115), copper cores (116) and power lines (118); the optical fibers (115), copper cores (116) and power lines (118) are respectively arranged in an interlaced manner with the three third filling blocks (114); a reinforcing core (117) is provided in the middle through hole of the insulating buffer frame (111); the outer wall of the insulating layer (101) is provided with a second high-temperature resistant layer (119); the outer wall of the second high-temperature resistant layer (119) is provided with a second shielding layer (120); the outer wall of the second shielding layer (120) is provided with a corrosion-resistant layer (121); and the outer wall of the corrosion-resistant layer (121) is provided with a wear-resistant layer (122).

7. A method for preparing a high temperature resistant composite cable, characterized in that: The high temperature resistant composite cable according to claim 6 is used, comprising the following steps: S1. When a high-temperature resistant composite cable needs to be prepared, materials are prepared first. Appropriate optical fibers (115), copper cores (116), reinforcing cores (117), and power cords (118) are selected as needed. Then, one end of the optical fiber (115), one end of the copper core (116), one end of the reinforcing core (117), and one end of the power cord (118) are simultaneously driven by a device. Then, a layer consisting of an insulating buffer frame (111), a semicircular ring (112), a connecting strip (109), and a first high-temperature resistant layer (108) is extruded between the outer surfaces of the driven optical fiber (115), copper core (116), reinforcing core (117), and power cord (118) by an extruder. When the layer is cooled to a suitable temperature, S2, directly injecting the first filling block (110), the second filling block (113) and the third filling block (114) into the interior of the layer body in sequence, after the first filling block (110), the second filling block (113) and the third filling block (114) are completed, directly adding the first shielding layer (107) on the outer wall of the first high-temperature resistant layer (108) in the layer body, after the first shielding layer (107) is completed, using an extruder to extrude the water-blocking layer (106) on the outer wall of the first shielding layer (107), when the water-blocking layer (106) is cooled to a suitable temperature, using an extruder to extrude the sheath (103) on the outer wall of the water-blocking layer (106), and then installing a steel wire rope (105) on each second cylindrical hole (104) on the sheath (103); S3, then adding a protective layer (102) consisting of a flame retardant block (1025), a first protective layer (1021), a separating soft strip (1022) and a second protective layer (1024) to the outer surface of the sheath (103), and finally extruding an insulating layer (101) on the outer wall of the protective layer (102) using an extruder; S4. After the extrusion operation of the insulating layer (101) is completed, a second high-temperature resistant layer (119) is extruded on the outer wall of the insulating layer (101) by an extruder, and then a second shielding layer (120) is added to the outer wall of the second high-temperature resistant layer (119). Then, a corrosion-resistant layer (121) is extruded on the outer wall of the second shielding layer (120) by an extruder, and finally, a wear-resistant layer (122) is extruded on the outer wall of the corrosion-resistant layer (121) by an extruder, and a high-temperature resistant composite cable can be manufactured.

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