A high-temperature resistant and protective flame-retardant cable

Abstract

The present invention discloses a high-temperature resistant and protective flame-retardant cable, which relates to the technical field of cables. It includes a conductor assembly. A flame-retardant component for flame retardancy is arranged outside the conductor assembly. A protective component for improving the protection ability is arranged outside the flame-retardant component. A voltage-resistant and ground-clearing component for improving the compression resistance and anti-drop ability is arranged outside the protective component; after the support bars are fixed, the front and rear ends are on the same straight line, but the middle part will bend outward due to extrusion and form a spherical net outside the cable, supporting the internal cable off the ground. When the front and rear ends of the support bars are fixed with staggered positions, a spiral shape will be formed and closely attached to the outside of the armor layer to form a new protective layer, effectively improving the compression resistance of the cable. This design effectively avoids the problems that the cable will collide with and rub against the ground when being dragged, heavily pressed, and thrown during the cable burial and overhead processes, effectively solves the problem of cable damage, and ensures the safety of the power cable during use.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and specifically to a high-temperature resistant and flame-retardant cable with protection. Background Technique

[0002] A flame-retardant cable refers to a power cable with good flame-retardant characteristics, which can prevent the spread of flames during a fire. It is made of special flame-retardant materials that do not easily burn when heated or can delay the burning speed, reducing the harm of fire.

[0003] In the prior art, as disclosed in Chinese Patent No.: CN118248392A, there is a high-temperature resistant and flame-retardant cable with protection. It includes split cables, and a support skeleton is arranged between the split cables. The support skeleton includes a central rib and several partition strips. The partition strips in the same circumferential phase separate two adjacent split cables; an elastic fixing layer, a filling and fixing layer, an inner sheath, a fireproof mud layer, an armor layer, and an outer sheath are sequentially arranged from the inside to the outside of the split cables. The filling and fixing layer is used to maintain the shape of the elastic fixing layer. By setting the elastic fixing layer, the support skeleton, and the filling and fixing layer, the present invention can generate an elastic space for the split cables to move relative to each other inside when the cable is bent in any direction. By using the relative movement between the split cables, the contact stress on each split cable is reduced, improving the anti-bending performance of the cable. At the same time, the setting of the fireproof mud layer and the filling and fixing layer improves the high-temperature resistance and flame-retardant performance of the cable.

[0004] Although the above patent improves the high-temperature resistance and flame-retardant performance of the cable by setting the fireproof mud layer and the filling and fixing layer, existing power cables are often temporarily placed on the ground during the process of burial and overhead installation, and have a long extension distance. During this process, when they are dragged, pressed, and thrown, they will collide and rub against the ground, resulting in wear and even rupture of the external protective layer and insulation layer, thereby affecting the safety performance of the finally buried and overhead power cables.

[0005] Therefore, we propose a high-temperature resistant and flame-retardant cable with protection to solve the problems raised in the above background technique. Summary of the Invention

[0006] The purpose of the present invention is to provide a high-temperature resistant and flame-retardant cable with protection to solve the problem that power cables are often temporarily placed on the ground during the process of burial and overhead installation, and have a long extension distance. During this process, when they are dragged, pressed, and thrown, they will collide and rub against the ground, resulting in wear and even rupture of the external protective layer and insulation layer, thereby affecting the safety performance of the finally buried and overhead power cables.

[0007] To achieve the above object, the present invention provides the following technical solution: a high-temperature resistant and protective flame-retardant cable, including a conductor assembly, a flame-retardant assembly for flame retardancy is arranged outside the conductor assembly, a protective assembly for improving the protection ability is arranged outside the flame-retardant assembly, and a pressure-resistant and ground-clearing assembly for improving the pressure resistance and drop resistance ability is arranged outside the protective assembly. The protective assembly includes an armor layer, bearings are installed at positions near the front and rear ends of the outer surface of the armor layer. The number of the pressure-resistant and ground-clearing assemblies is set to be multiple and they are equidistantly distributed on the outer surface of the armor layer. The pressure-resistant and ground-clearing assembly includes a support bar, the middle part of the support bar is bent outward, the rear end of the support bar is fixedly connected with a first extension head, a first connecting plate is fixedly connected to the outside of the first extension head, first buckles are symmetrically and fixedly connected to the inner side of the first connecting plate, symmetric first clamping seats are arranged at positions near the inner side of the first buckles, the first clamping seats are fixedly connected to the outer surface of the armor layer near the rear end, and a first clamping groove is formed on the outer side of the first clamping seat. The first buckle is snap-connected with the left first clamping groove.

[0008] Preferably, a second extension head is fixedly connected to the front end of the support bar, a second connecting plate is fixedly connected to the outside of the second extension head, second buckles are symmetrically and fixedly connected to the inner side of the second connecting plate, symmetric second clamping seats are arranged at positions near the inner side of the second buckles, and the second clamping seats are fixedly connected to the outer surface of the armor layer near the front end.

[0009] Preferably, a second clamping groove is formed on the outer side of the second clamping seat, the second buckle is snap-connected with the right second clamping groove, the outer surface near the front edge of the inner side of the second connecting plate is fixedly connected to the outer surface of one of the bearings, and the outer surface near the rear edge of the inner side of the first connecting plate is fixedly connected to the outer surface of the other bearing.

[0010] Preferably, corrugations are arranged at a position near the middle part of the outside of the armor layer, an aerogel felt is adhesively connected to the inner wall of the armor layer, and a metal aluminum foil layer is adhesively connected to the inner wall of the aerogel felt.

[0011] Preferably, the flame-retardant assembly includes a first accommodating film, a sodium dihydrogen phosphate powder layer, a second accommodating film, a sodium bicarbonate powder layer and a third accommodating film. The opposite side outer surfaces of the first accommodating film and the second accommodating film are fused and connected near the edges and a first empty layer is formed between the two. The sodium dihydrogen phosphate powder layer is arranged in the first empty layer.

[0012] Preferably, the opposite side outer surfaces of the second accommodating film and the third accommodating film are fused and connected near the edges and a second empty layer is formed between the two. The sodium bicarbonate powder layer is arranged in the second empty layer. The third accommodating film is adhesively connected to the inner wall of the metal aluminum foil layer.

[0013] Preferably, the first accommodating film, the second accommodating film, and the third accommodating film are all made of polyvinyl alcohol material. The sodium dihydrogen phosphate powder layer is made of sodium dihydrogen phosphate material and is in powder form. The sodium bicarbonate powder layer is made of sodium bicarbonate material and is in powder form.

[0014] Preferably, the conductor assembly includes an insulating layer. Three conducting cores are filled and arranged inside the insulating layer. An insulating rubber sleeve is sleeved outside the conducting core. A filling layer is arranged between the outside of the three insulating rubber sleeves and the inside of the insulating layer.

[0015] Preferably, a shielding layer is arranged outside the insulating layer. The shielding layer is woven from copper wire material. A sheath layer is sleeved outside the shielding layer. The sheath layer is made of polyethylene material.

[0016] Preferably, a flame-retardant functional layer is sleeved outside the sheath layer. The flame-retardant functional layer is formed by fusing styrene and rubber materials.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. When the present invention is in use, the cooperation between the first buckle on the surface of the first connecting plate and the first clamping groove on the surface of the first clamping seat achieves the effect of fixing the rear end of the support bar. The cooperation between the second buckle on the surface of the second connecting plate and the second clamping groove on the surface of the second clamping seat achieves the effect of fixing the front end of the support bar. And the positions of each group of first clamping seats and second clamping seats are staggered. When the support bar is fixed, the front and rear ends are on the same straight line, and the middle part will bend outward due to extrusion and form a spherical net outside the cable, lifting the internal cable off the ground. When the front and rear ends of the support bar are fixed and the positions are staggered, it will form a spiral shape and closely adhere to the outside of the armor layer to form a new protective layer, effectively improving the compressive performance of the cable. This design effectively avoids the problems that the cable will collide and rub against the ground when being dragged, heavily pressed, and thrown during the cable laying and overhead processes, effectively solves the problem of cable damage, and ensures the safety of the power cable during use.

[0019] 2. When the present invention is in use, when the sodium dihydrogen phosphate powder layer and the sodium bicarbonate powder layer composed of sodium dihydrogen phosphate powder and sodium bicarbonate powder between the first accommodating film, the second accommodating film, and the third accommodating film encounter high temperature, the sodium bicarbonate powder layer will decompose by heat and generate carbon dioxide and water. The sodium dihydrogen phosphate powder layer will decompose by heat and generate ammonia and phosphoric acid. Among them, carbon dioxide and ammonia will rush out when the outer accommodating film decomposes, thereby effectively diluting the concentration of oxygen and making it difficult for the cable to burn. And water can absorb heat, further improving the flame-retardant effect. When the cable burns, phosphoric acid will form a glassy covering on the surface of the cable, thereby isolating oxygen and heat. With the mutual cooperation, the high-temperature flame-retardant performance of the cable is greatly improved, ensuring the safety during use and ensuring the smooth progress of power transmission.

[0020] 3. When the present invention is in use, the flame retardant functional layer is located outside the sheath layer. When encountering high temperature, the rubber segments inside it will gradually soften, and the styrene hard segments will deform or melt to a certain extent at different temperatures. During this change process, heat can be absorbed to a certain extent to hinder the spread of combustion. In its normal temperature state, it has good elasticity, tensile strength and wear resistance, thus further providing effective protection for internal components such as the conducting core, effectively improving the protection and flame retardant performance of the power cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional view of a high-temperature resistant protective flame retardant cable of the present invention;

[0022] Figure 2 is an unfolded view of a high-temperature resistant protective flame retardant cable of the present invention;

[0023] Figure 3 is a side view of a high-temperature resistant protective flame retardant cable of the present invention;

[0024] Figure 4 is a schematic structural view of the conductor assembly of a high-temperature resistant protective flame retardant cable of the present invention;

[0025] Figure 5 is a schematic structural view of the flame retardant assembly of a high-temperature resistant protective flame retardant cable of the present invention;

[0026] Figure 6 is a schematic structural view of the protective assembly of a high-temperature resistant protective flame retardant cable of the present invention;

[0027] Figure 7 is a partial structural view of a high-temperature resistant protective flame retardant cable of the present invention;

[0028] Figure 8 is a schematic structural view of the low pressure-resistant component of a high-temperature resistant protective flame retardant cable of the present invention;

[0029] Figure 9 is Figure 8 the enlarged view at A in

[0030] Figure 10 is Figure 8 the enlarged view at B in

[0031] In the figure: 1. Conductor assembly; 101. Conductive core; 102. Insulating rubber sleeve; 103. Filling layer; 104. Insulating layer; 105. Shielding layer; 106. Sheath layer; 107. Flame-retardant functional layer; 2. Flame-retardant assembly; 201. First accommodating film; 202. Sodium dihydrogen phosphate powder layer; 203. Second accommodating film; 204. Sodium bicarbonate powder layer; 205. Third accommodating film; 3. Protection assembly; 301. Aluminum foil layer; 302. Aerogel felt; 303. Armor layer; 304. Corrugation; 305. Bearing; 4. Voltage-resistant and ground-clearing assembly; 401. Support bar; 402. First extension head; 403. First connecting plate; 404. First buckle; 405. Second extension head; 406. Second connecting plate; 407. Second buckle; 408. First card seat; 409. First card slot; 410. Second card seat; 411. Second card slot. Detailed implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1: Please refer to Figures 1 - 10As shown in the figure, the present invention provides a technical solution: a high-temperature resistant and protective flame-retardant cable, which includes a conductor assembly 1. A flame-retardant component 2 for flame retardancy is arranged outside the conductor assembly 1. A protective component 3 for improving the protection ability is arranged outside the flame-retardant component 2. A pressure-resistant and ground-clearing component 4 for improving the pressure resistance and anti-drop ability is arranged outside the protective component 3. The protective component 3 includes an armor layer 303. Bearings 305 are installed at positions near the front and rear ends of the outer surface of the armor layer 303. The number of the pressure-resistant and ground-clearing components 4 is set to be multiple and they are evenly distributed on the outer surface of the armor layer 303. The pressure-resistant and ground-clearing component 4 includes a support bar 401. The middle part of the support bar 401 is bent outward. The rear end of the support bar 401 is fixedly connected with a first extension head 402. A first connecting plate 403 is fixedly connected to the outside of the first extension head 402. First buckles 404 are symmetrically and fixedly connected to the inner side of the first connecting plate 403. Symmetric first card seats 408 are arranged at positions near the inner side of the first buckles 404. The first card seats 408 are fixedly connected to the outer surface of the armor layer 303 near the rear end. A first card slot 409 is opened on the outside of the first card seat 408. The first buckle 404 is snap-connected with the left first card slot 409. The front end of the support bar 401 is fixedly connected with a second extension head 405. A second connecting plate 406 is fixedly connected to the outside of the second extension head 405. Second buckles 407 are symmetrically and fixedly connected to the inner side of the second connecting plate 406. Symmetric second card seats 410 are arranged at positions near the inner side of the second buckles 407. The second card seats 410 are fixedly connected to the outer surface of the armor layer 303 near the front end. A second card slot 411 is opened on the outside of the second card seat 410. The second buckle 407 is snap-connected with the right second card slot 411. The outer surface of the inner side of the second connecting plate 406 near the front side edge is fixedly connected to the outer surface of one of the bearings 305. The outer surface of the inner side of the first connecting plate 403 near the rear side edge is fixedly connected to the outer surface of the other bearing 305. A corrugation 304 is arranged near the middle part of the outside of the armor layer 303. An aerogel felt 302 is adhesively connected to the inner wall of the armor layer 303. A metal aluminum foil layer 301 is adhesively connected to the inner wall of the aerogel felt 302.

[0034] In this embodiment, the support bar 401 is made of thin steel sheet, which has good bendability and toughness, and high mechanical strength. The two ends of the support bar 401 are matched with the bearing 305 through the first extension head 402 and the second extension head 405 to form a rotational connection with the armored layer 303. The positions of each group of the first clamping seats 408 and each group of the second clamping seats 410 are staggered. When the cable is temporarily placed on the ground during outdoor burial and overhead installation, under the action of the bearing 305, the first connecting plate 403 and the second connecting plate 406 on the first extension head 402 and the second extension head 405 are rotated, and the first buckle 404 on the right side of the bottom of the first connecting plate 403 and the second buckle 407 on the left side of the bottom of the second connecting plate 406 are snapped into the first slot 409 on the surface of the first clamping seat 408 and the second slot 411 on the surface of the second clamping seat 410 that are in the same straight line. At this time, the two ends of the support bar 401 are in the state of the closest distance, so it will bend outward. After all the support bars 401 bend outward, a spherical net will be formed outside the cable. And the toughness and bending performance of the metal steel material make the spherical net have good support performance and mechanical performance, thus supporting the internal cable off the ground, effectively avoiding the problems that the cable will collide and rub with the ground when being dragged, heavily pressed and thrown during the cable burial and overhead installation process, effectively solving the problem of cable damage, ensuring the safety of the power cable during use. And before the cable is buried in the ground, the two ends of the support bar 401 are rotated again, and the first buckle 404 on the left side of the surface of the first connecting plate 403 is snapped into the first slot 409 on the surface of the left first clamping seat 408, and the second buckle 407 on the right side of the surface of the second connecting plate 406 is snapped into the second slot 411 on the surface of the right second clamping seat 410. At this time, the positions of the two ends of the support bar 401 deviate and intersect, so it will twist and coil tightly around the outside of the armored layer 303 to form a new protective layer, effectively improving the compressive performance of the cable and further improving the protection of the cable. The armored layer 303 is mainly used for protecting the inside of the cable. It is made of aluminum alloy material, and the corrugation 304 designed in the middle makes the armored layer 303 have good protection performance while also having good tensile performance and bending performance, which is convenient for practical use during the cable construction process. And the internal aerogel felt 302 plays a role in filling the inner wall of the armored layer 303, which is convenient for setting the metal aluminum foil layer 301 inside. The metal aluminum foil has good heat insulation performance and can prevent the transfer of internal and external temperatures, further improving the high-temperature resistance and flame retardant performance of the cable.

[0035] Embodiment 2: As Figures 1 - 10As shown, the flame retardant component 2 includes a first accommodating film 201, a sodium dihydrogen phosphate powder layer 202, a second accommodating film 203, a sodium bicarbonate powder layer 204, and a third accommodating film 205. The outer surfaces of the opposite sides of the first accommodating film 201 and the second accommodating film 203 are fused and connected near the edges, and a first empty layer is formed therebetween. The sodium dihydrogen phosphate powder layer 202 is disposed in the first empty layer. The outer surfaces of the opposite sides of the second accommodating film 203 and the third accommodating film 205 are fused and connected near the edges, and a second empty layer is formed therebetween. The sodium bicarbonate powder layer 204 is disposed in the second empty layer. The third accommodating film 205 is adhesively connected to the inner wall of the metal aluminum foil layer 301. The first accommodating film 201, the second accommodating film 203, and the third accommodating film 205 are all made of polyvinyl alcohol material. The sodium dihydrogen phosphate powder layer 202 is made of sodium dihydrogen phosphate material and is in powder form. The sodium bicarbonate powder layer 204 is made of sodium bicarbonate material and is in powder form.

[0036] In this embodiment, the first accommodating film 201, the second accommodating film 203, and the third accommodating film 205 are made of polyvinyl alcohol material. The film made of polyvinyl alcohol has good tensile strength, toughness, and wear resistance. At the same time, it also has the characteristics of water solubility and barrier property. Therefore, at normal temperature, the three accommodating films can effectively block water vapor and prevent the cable from being damaged. Although the polyvinyl alcohol film has strong mechanical properties, it is afraid of high temperature. When the cable is in a high-temperature state, as the temperature rises, the polyvinyl alcohol film will gradually soften, deform, and decompose. When the sodium dihydrogen phosphate powder layer 202 and the sodium bicarbonate powder layer 204 composed of sodium dihydrogen phosphate powder and sodium bicarbonate powder between the first accommodating film 201, the second accommodating film 203, and the third accommodating film 205 encounter high temperature, the sodium bicarbonate powder layer 204 will decompose when heated and produce carbon dioxide and water, and the sodium dihydrogen phosphate powder layer 202 will decompose when heated and produce ammonia and phosphoric acid. Among them, carbon dioxide and ammonia will rush out when the outer accommodating film decomposes, thereby effectively diluting the concentration of oxygen and making it difficult for the cable to burn. Water can absorb heat and further improve the flame retardant effect. When the cable burns, phosphoric acid will form a glassy covering on the surface of the cable, thereby isolating oxygen and heat. With their mutual cooperation, the high-temperature flame retardant performance of the cable is greatly improved, ensuring safety during use and ensuring the smooth progress of power transmission.

[0037] Example 3: As Figures 1 - 10As shown in the figure, the conductor assembly 1 includes an insulating layer 104. Inside the insulating layer 104, three conducting cores 101 are filled and arranged. An insulating rubber sleeve 102 is sleeved outside the conducting core 101. A filling layer 103 is arranged between the outside of the three insulating rubber sleeves 102 and the inside of the insulating layer 104. A shielding layer 105 is arranged outside the insulating layer 104. The shielding layer 105 is woven from copper wire material. A sheath layer 106 is sleeved outside the shielding layer 105. The sheath layer 106 is made of polyethylene material. A flame-retardant functional layer 107 is sleeved outside the sheath layer 106. The flame-retardant functional layer 107 is formed by fusing styrene and rubber materials.

[0038] In this embodiment, the conducting core 101 is made of metallic copper and has good electrical conductivity, meeting the power transmission requirements of the cable. The insulating rubber sleeve 102 sleeved on its surface is made of common semi-conductive rubber material on the market, which can evenly distribute the electric field on the conductor surface. The insulating layer 104 is made of cross-linked polyethylene material, playing the role of electrical insulation and preventing current leakage. The filling layer 103 filled between the insulating layer 104 and the insulating rubber sleeve 102 is made of rock wool rope material, having good heat insulation and fire prevention properties, and low hygroscopicity, which can keep the inside of the cable dry. The shielding layer 105 outside the insulating layer 104 is woven into a net shape from copper wire material, which can effectively shield the interference of external electromagnetic fields on the inside of the cable. The sheath layer 106 outside the shielding layer 105 is made of polyvinyl chloride material, which has good corrosion resistance, wear resistance and mechanical strength, and low cost. The flame-retardant functional layer 107 is made into a thin suit by styrene hard segments and rubber soft segments, and after being superposed and heated and then cooled, the two will fuse into one body, thus forming a styrene thermoplastic elastomer. The flame-retardant functional layer 107 is located outside the sheath layer 106. When encountering high temperature, the rubber segments inside it will gradually soften, and the styrene hard segments will deform or melt to a certain extent at different temperatures. During this change process, heat can be absorbed to a certain extent to hinder the spread of combustion. In its normal temperature state, it has good elasticity, tensile strength and wear resistance, thus further providing effective protection for the internal components such as the conducting core 101, effectively improving the protection and flame-retardant performance of the power cable.

[0039] The effects achieved by the entire mechanism and its working principle are as follows: When the cable is temporarily placed on the ground during outdoor burial and overhead installation, under the action of the bearing 305, the first connecting plates 403 and the second connecting plates 406 on the first extension head 402 and the second extension head 405 are rotated, and the first buckle 404 on the right side of the bottom of the first connecting plate 403 and the second buckle 407 on the left side of the bottom of the second connecting plate 406 are snapped into the first slot 409 on the surface of the first socket 408 and the second slot 411 on the surface of the second socket 410 that are in the same straight line. At this time, the two ends of the support bar 401 are in the closest distance state, so it will bend outward. After all the support bars 401 bend outward, a spherical net will be formed outside the cable. And the toughness and bending performance of the metal steel material make this spherical net have good support performance and mechanical performance, thus supporting the internal cable off the ground, effectively avoiding the problems of impact and friction with the ground when the cable is dragged, heavily pressed, and thrown during burial and overhead installation, effectively solving the problem of cable damage, and ensuring the safety of the power cable during use. Moreover, before the cable is buried in the ground, the two ends of the support bar 401 are rotated again, and the first buckle 404 on the left side of the surface of the first connecting plate 403 is snapped into the first slot 409 on the surface of the left first socket 408, and the second buckle 407 on the right side of the surface of the second connecting plate 406 is snapped into the second slot 411 on the surface of the right second socket 410. At this time, the positions of the two ends of the support bar 401 deviate and intersect, so it will twist and coil tightly around the outside of the armor layer 303 to form a new protective layer, effectively improving the compressive performance of the cable and further enhancing the protection of the cable. The armor layer 303, the aerogel felt 302, and the metal aluminum foil layer 301 are the basic protective and heat-insulating layers of the cable. The internal conducting core 101 is used for power transmission, and the insulating rubber sleeve 102, the filling layer 103, the insulating layer 104, the shielding layer 105, and the sheath layer 106 outside the conducting core 101 are the basic protective layers, which are used to provide common functions for the cable. The flame-retardant functional layer 107 is made of a thin suit of styrene hard segments and rubber soft segments, and after being superposed and heated and then cooled, the two will fuse into one body, thus forming a styrene thermoplastic elastomer. This flame-retardant functional layer 107 is located outside the sheath layer 106. When encountering high temperature, the rubber segments inside it will gradually soften, and the styrene hard segments will deform or melt to a certain extent at different temperatures. During this change process, heat can be absorbed to a certain extent to hinder the spread of combustion. And in its normal temperature state, it has good elasticity, tensile strength, and wear resistance, thus further providing effective protection for the internal components such as the conducting core 101, effectively improving the protection and flame-retardant performance of the power cable. The first accommodating film 201, the second accommodating film 203, and the third accommodating film 205 are made of polyvinyl alcohol material. The film made of polyvinyl alcohol has good tensile strength, toughness, and wear resistance. At the same time, it also has the characteristics of water solubility and barrier property. Therefore, at normal temperature, the three accommodating films can effectively block water vapor and prevent the cable from being damaged.Although the polyvinyl alcohol film has strong mechanical properties, it is afraid of high temperatures. When the cable is in a high-temperature state, as the temperature rises, the polyvinyl alcohol film will gradually soften, deform, and decompose. When the sodium dihydrogen phosphate powder layer 202 and the sodium bicarbonate powder layer 204 composed of sodium dihydrogen phosphate powder and sodium bicarbonate powder between the first accommodating film 201, the second accommodating film 203, and the third accommodating film 205 encounter high temperatures, the sodium bicarbonate powder layer 204 will decompose upon heating and produce carbon dioxide and water. The sodium dihydrogen phosphate powder layer 202 will decompose upon heating and produce ammonia and phosphoric acid. Among them, carbon dioxide and ammonia will rush out when the outer accommodating film decomposes, thereby effectively diluting the concentration of oxygen, making it difficult for the cable to burn. Water can absorb heat and further improve the flame retardant effect. When the cable burns, phosphoric acid will form a glassy covering on the surface of the cable, thereby isolating oxygen and heat. With their mutual cooperation, the high-temperature flame retardant performance of the cable is greatly improved, ensuring safety during use and ensuring the smooth progress of power transmission.

[0040] Among them, the feeding device 104, the water dispenser 108, the centrifugal fan 201, the first solenoid valve 204, the second solenoid valve 311, the air conditioner 6, and the PLC controller 4 are all prior arts, and their components and operating principles are all publicly known technologies, so no further explanation will be given here.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A high temperature resistant protective flame retardant cable, comprising a conductor assembly (1), characterized in that: The conductor component (1) is provided with a flame retardant component (2) for flame retardancy, the flame retardant component (2) is provided with a protective component (3) for improving protective capability, and the protective component (3) is provided with a pressure-resistant ground-lift component (4) for improving pressure resistance and fall resistance. The protection component (3) comprises an armor layer (303), and bearings (305) are installed at positions near the front and rear ends of the outer surface of the armor layer (303); The number of the pressure-resistant ground-lifting components (4) is set to be multiple and equidistantly distributed on the outer surface of the armor layer (303), the pressure-resistant ground-lifting components (4) include a support bar (401), the middle part of the support bar (401) is bent outward, the rear end of the support bar (401) is fixedly connected to a first extension head (402), the outer side of the first extension head (402) is fixedly connected to a first connecting plate (403), the inner side of the first connecting plate (403) is symmetrically fixedly connected to a first buckle (404), a symmetrical first clamping seat (408) is provided near the inner side of the first clamping seat (404), the first clamping seat (408) is fixedly connected to the outer surface of the armor layer (303) near the rear end, the outer side of the first clamping seat (408) is provided with a first clamping groove (409), and the first buckle (404) is clamped and connected with the first clamping groove (409) on the left side; The front end of the support bar (401) is fixedly connected to a second extension head (405), the outer side of the second extension head (405) is fixedly connected to a second connection plate (406), the inner side of the second connection plate (406) is symmetrically fixedly connected to a second buckle (407), and a symmetrical second clamping seat (410) is provided near the inner side of the second buckle (407), and the second clamping seat (410) is fixedly connected to the outer surface of the armor layer (303) near the front end; A second card slot (411) is provided on the outer side of the second card seat (410), the second buckle (407) is snap-connected with the second card slot (411) on the right side, the inner outer surface of the second connecting plate (406) is fixedly connected to the outer surface of one of the bearings (305) near the front edge, and the inner outer surface of the first connecting plate (403) is fixedly connected to the outer surface of the other bearing (305) near the rear edge; The first buckle (404) on the surface of the first connecting plate (403) and the first slot (409) on the surface of the first clamping seat (408) cooperate to fix the rear end of the support bar (401), and the second buckle (407) on the surface of the second connecting plate (406) and the second slot (411) on the surface of the second clamping seat (410) cooperate to fix the front end of the support bar (401), and each group of first clamping seats (408) and second clamping seats (410) are staggered. When the front and rear ends of the support bar (401) are fixed and are on the same straight line, the middle part will bend outwards due to extrusion and form a ball net shape outside the cable to support the internal cable off the ground. When the front and rear ends of the support bar (401) are fixed, the positions are staggered to form a spiral shape that is tightly attached to the outside of the armor layer (303) to form a new protective layer.

2. The high temperature resistant protective flame retardant cable according to claim 1, characterized in that: The armor layer (303) is provided with corrugations (304) near the middle portion of the exterior, the armor layer (303) is bonded to the inner surface wall with an aerogel felt (302), and the inner surface wall of the aerogel felt (302) is bonded to the metal aluminum foil layer (301).

3. The high temperature resistant protective flame retardant cable according to claim 2, characterized in that: The flame retardant assembly (2) comprises a first containment film (201), a sodium dihydrogen phosphate powder layer (202), a second containment film (203), a sodium bicarbonate powder layer (204) and a third containment film (205); the outer surfaces of opposite sides of the first containment film (201) and the second containment film (203) are fused and connected near the edges, and a first empty layer is formed between the two; the sodium dihydrogen phosphate powder layer (202) is arranged in the first empty layer.

4. The high temperature resistant protective flame retardant cable according to claim 3, characterized in that: The outer surfaces of the opposite sides of the second containing film (203) and the third containing film (205) are fused and connected near the edges to form a second empty layer between the two, the sodium bicarbonate powder layer (204) is arranged in the second empty layer, and the inner wall of the third containing film (205) and the metal aluminum foil layer (301) are bonded and connected.

5. The high temperature resistant protective flame retardant cable according to claim 4, characterized in that: The first containing film (201), the second containing film (203) and the third containing film (205) are all made of polyvinyl alcohol material, the sodium dihydrogen phosphate powder layer (202) is made of sodium dihydrogen phosphate material and is in powder form, and the sodium bicarbonate powder layer (204) is made of sodium bicarbonate material and is in powder form.

6. The high temperature resistant protective flame retardant cable according to claim 5, characterized in that: The conductor assembly (1) comprises an insulating layer (104), the interior of the insulating layer (104) is filled with three conductor cores (101), the exterior of the conductor cores (101) is covered with an insulating rubber sleeve (102), and a filling layer (103) is provided between the exterior of the three insulating rubber sleeves (102) and the interior of the insulating layer (104).

7. The high temperature resistant protective flame retardant cable according to claim 6, characterized in that: A shielding layer (105) is arranged outside the insulating layer (104), and the shielding layer (105) is woven from copper wire material. A sheath layer (106) is arranged outside the shielding layer (105), and the sheath layer (106) is made of polyethylene material.

8. The high temperature resistant protective flame retardant cable according to claim 7, characterized in that: The outer portion of the sheath layer (106) is provided with a flame retardant functional layer (107), and the flame retardant functional layer (107) is formed by a fusion of styrene and rubber materials.

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