A pressure-resistant, torsion-resistant, explosion-proof cable

Abstract

The application discloses a pressure-resistant, torsion-resistant and explosion-proof cable and relates to the technical field of cables. The cable comprises a conductor, a functional layer and an outer protective layer arranged outside the conductor, an explosion-proof assembly, a buffer assembly and a cooling assembly. The explosion-proof assembly is arranged on the outer wall of the functional layer and is composed of a plurality of staggered ribs. Pressure relief grooves are formed between adjacent ribs. The buffer assembly comprises an inner support arranged outside the explosion-proof assembly. An outer support is arranged inside the outer protective layer. The inner recess of the inner support and the outer convex part of the outer support form a cavity. The cooling assembly comprises a capsule arranged in the corresponding inner recess, outer convex part and cavity. The staggered ribs, the cooling assembly and the buffer assembly solve the problems that the cable has poor pressure resistance during use and cannot play an explosion-proof role after being internally broken.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable, in particular to a pressure-resistant and anti-torsion explosion-proof cable. BACKGROUND

[0002] The cable is commonly composed of a conductor wrapped with an insulation layer, a shielding layer and an outer protective component, and is used for transmitting electric energy. According to different use environments of the cable, the production mode of the cable is also different. For example, when the cable is used to electrically connect devices or between devices, the cable may be crushed due to the movement of the devices. Since the cable is twisted together to form a hard whole, the cable is easily loosened and deformed after being crushed for many times, which causes slow heat dissipation, weak electric energy transmission performance of the cable and fire of the cable due to rapid heat accumulation at the deformed position.

[0003] When the cable is used in chemical, petroleum, natural gas, mine and other explosion-hazardous areas, although the general cable cooling can maintain the cooling of the conductor and prevent the cable from catching fire due to high temperature, the internal insulation layer is easily aged after long-time work of the cable, which makes the cable be easily punctured by the conductor and thus explosion occurs. Therefore, it is necessary to produce a cable with explosion-proof capability to avoid explosion of the cable.

[0004] In actual use, the cable is easily twisted and stretched due to the continuous movement between devices, which causes the cable to be continuously stretched and twisted and thus the cable is damaged, reducing the actual service life of the cable. SUMMARY

[0005] The present application aims to provide a pressure-resistant and anti-torsion explosion-proof cable to solve the technical problems of poor pressure resistance of the cable in use and inability to prevent explosion after internal puncture.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a pressure-resistant and anti-torsion explosion-proof cable, comprising a conductor, a functional layer and an outer protective layer arranged outside the conductor, and further comprising:

[0007] An explosion-proof assembly, comprising an explosion-proof mesh composed of a plurality of staggered ribs arranged outside the functional layer, and a pressure relief groove formed between adjacent ribs;

[0008] A buffer assembly, comprising an inner support arranged outside the ribs, and an outer support arranged inside the outer protective layer, wherein the inner support and the outer support are both composed of a plurality of outer convex portions and inner concave portions, and the inner concave portion of the inner support and the outer convex portion of the outer support form a cavity;

[0009] Cooling components, which comprise capsules arranged in the corresponding inner recesses, outer protrusions and cavities, and each of the capsules is filled with cooling materials.

[0010] Preferably, a plurality of pressure guide grooves are arranged on the explosion-proof component and communicated with the pressure relief grooves, the pressure relief grooves are filled with expansion materials, and the plurality of ribs are fixedly connected with the outer wall of the functional layer.

[0011] Preferably, the explosion-proof component further comprises a plurality of energy absorption members arranged between the capsules and the corresponding inner recesses, outer protrusions and cavities, and a plurality of micropores are arranged on the energy absorption members.

[0012] Preferably, the outer wall of the outer protrusion of the inner support is fixedly connected with the inner recess of the outer support.

[0013] Preferably, each of the capsules arranged in the cavities is communicated with the adjacent capsule through a communication pipe, and the capsule arranged in the inner support is communicated with the capsule arranged in the outer support through a connecting pipe.

[0014] Preferably, a plurality of avoiding grooves for avoiding the communication pipes and the connecting pipes are arranged on the inner support and the outer support.

[0015] Preferably, the functional layer comprises an insulation layer arranged on the outer wall of the conductor, and a shielding layer is arranged on the outer wall of the insulation layer.

[0016] Preferably, the outer protective layer comprises a protective layer, and an armor layer is arranged on the inner wall of the protective layer.

[0017] Preferably, the capsule arranged in the inner recess of the outer support is fixedly connected with the inner wall of the protective layer.

[0018] Preferably, the capsule arranged in the outer protrusion of the inner support is fixedly connected with the rib.

[0019] The present application has the following beneficial effects:

[0020] 1、Through the setting of the outer convex part and the inner concave part of the outer support and the inner support, multi-stage buffering of the extrusion pressure is realized, and through the capsule in the outer convex part and the inner concave part and the capsule in the cavity, the extrusion pressure is buffered again, so that good anti-extrusion effect is realized, the problem that the transmission efficiency is reduced due to the deformation of the internal conductor is avoided, after the mutual communication of the plurality of capsules, the cooling material moves in different capsules, the problem of heat accumulation is solved, through the setting of the pressure relief groove, the pressure guide groove, the energy absorbing part and the micropore, when the shielding layer and the insulating layer are broken down, the instantaneous impact energy is unloaded and flowed, the cable is prevented from being completely broken down due to too large instantaneous impact, and then the capsule, the inner support and the like are used for step-by-step pressure relief, so that the damage of the impact energy to the protective layer of the cable is reduced, the cable is prevented from being completely broken down, the cable has integrity, and the protection effect of the cable is enhanced.

[0021] 2、Through the capsule movably arranged in the inner support and the outer support, when the cable is twisted, the capsule moves relatively in the corresponding inner support and the outer support, and then the anti-twisting effect of the cable is realized, and when the cable is stretched, the inner support and the outer support are deformed, then the respective stretching between the functional layer and the outer protective layer in the cable is realized, and the anti-stretching effect of the cable is enhanced through the buffering of the capsule and the cooling material. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the application.

[0023] Figure 2 It is a schematic diagram of the sectional plane structure of the application.

[0024] Figure 3 It is a schematic diagram of the structure distribution of the inner support and the outer support of the application.

[0025] Figure 4 It is a schematic diagram of the structure of the rib of the application.

[0026] Figure 5 It is a sectional view of the structure of the capsule in the cavity of the application.

[0027] Figure 6 It is an explosion schematic diagram of the energy absorbing part of the application.

[0028] Figure 7 It is a distribution schematic diagram of the capsule and the energy absorbing part of the application.

[0029] The reference signs are: 1, conductor; 2, functional layer; 201, insulation layer; 202, shielding layer; 3, outer protective layer; 301, protective layer; 302, armored layer; 4, explosion-proof assembly; 401, rib; 402, pressure relief groove; 403, pressure guide groove; 404, energy absorption piece; 405, expansion material; 5, buffer assembly; 501, inner support; 502, outer support; 503, outer convex part; 504, inner concave part; 505, cavity; 506, avoidance groove; 6, cooling assembly; 601, capsule; 602, cooling material; 603, communication pipe; 604, connecting pipe. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0031] Embodiment one

[0032] The cable is commonly composed of a conductor 1 wrapped with an insulation layer 201, a shielding layer 202 and an outer protective component, and is a device for transmitting electric energy. According to different use environments of the cable, the production mode of the cable is also different. For example, when the cable is used to electrically connect devices and devices, the cable may be crushed with the movement of the devices. Because the cable is twisted together to form a hard whole, after the cable is crushed for many times, the cable is easily loosened and deformed inside, which easily leads to the problems of slow heat dissipation, weakened electric energy transmission performance of the cable, and rapid heat accumulation at the deformed position, which causes the cable to catch fire.

[0033] To solve the above technical problems, please refer to Figures 1 to 7As shown, the anti-pressure and anti-torsion explosion-proof cable of one embodiment of the present application comprises an anti-pressure and anti-torsion explosion-proof cable, which comprises a conductor 1, a functional layer 2 and an outer protective layer 3 arranged outside the conductor 1, and further comprises a buffer assembly 5 and a cooling assembly 6. The buffer assembly 5 comprises an inner support 501 arranged between the functional layer 2 and the outer protective layer 3, and the inner support 501 is provided with an outer support 502. The inner support 501 and the outer support 502 are both composed of a plurality of outer convex portions 503 and inner concave portions 504. The outer convex portions 503 and the inner concave portions 504 on the inner support 501 and the outer support 502 are staggered. The inner concave portion 504 of the inner support 501 and the outer convex portion 503 of the outer support 502 form a cavity 505. The cooling assembly 6 comprises a capsule 601 arranged in the corresponding inner concave portion 504 and outer convex portion 503 and cavity 505. Each capsule 601 is filled with a cooling material 602. The outer wall of the outer convex portion 503 of the inner support 501 is fixedly connected with the inner concave portion 504 of the outer support 502. Each capsule 601 located in the cavity 505 is communicated with the adjacent capsule 601 through a communication pipe 603. The capsule 601 located in the inner support 501 is communicated with the capsule 601 located in the outer support 502 through a connecting pipe 604. The functional layer 2 comprises an insulating layer 201 arranged on the outer wall of the conductor 1. The outer wall of the insulating layer 201 is provided with a shielding layer 202. The outer protective layer 3 comprises a protective layer 301. The outer wall of the protective layer 301 is provided with an armored layer 302.

[0034] In use, when the cable is extruded, the extrusion force is unloaded by the armored layer 302 to release part of the pressure, and then the extrusion force is transmitted to the inside of the cable through the protective layer 301. The extrusion force on the protective layer 301 is released into the capsules 601 in the inner concave portions 504 on the outer support 502. Since the capsules 601 are filled with the cooling material 602, which has a certain fluidity, a certain buffering effect can be provided.

[0035] Then the extrusion force is extruded onto the inner support 501 through the outer support 502. The force on the inner support 501 is transmitted to the capsules 601 in the outer convex portions 503 on the inner support 501. When the extrusion force is released into the cavity 505, it can be transmitted to the capsules 601 in the cavity 505. The capsules 601 are buffered by the cooling material 602 in the capsules 601. At the same time, the cooling material 602 in the capsules 601 can be extruded into the adjacent capsules 601 through the communication pipe 603 and the connecting pipe 604 after being pressed, preventing the capsules 601 from being damaged due to excessive extrusion, thereby achieving good pressure resistance effect. The shielding layer 202 and the insulating layer 201 in the cable and the conductor 1 are prevented from being directly deformed after being extruded, thereby preventing the transmission efficiency from being reduced and the heat dissipation from being slow after the internal deformation.

[0036] Meanwhile, the conductor 1 will gradually heat up after working, and the heat will be absorbed by the cooling material 602 through the inner support 501 and the capsule 601 close to the conductor 1, so that the cooling material 602 in the capsule 601 will expand after absorbing the heat, and then a part of the cooling material 602 in the capsule 601 will be discharged into the adjacent cavity 505 through the connecting pipe 603, and the connecting pipe 603 has strong heat conduction capacity, so that the heat is conducted to the adjacent capsule 601, and the cooling material 602 in the capsule 601 in the cavity 505 absorbs the heat and expands, and then the cooling material 602 in the inner recess 504 of the outer support 502 is heated and expanded, and then the cooling material 602 in the inner recess 504 is discharged into the capsule 601 in the outer convex part 503 on the inner support 501 through the connecting pipe 604, so as to realize the cooling of the conductor 1 and the continuous exchange of the cooling material 602, thereby realizing the rapid cooling of the conductor 1.

[0037] At a local high temperature, through the continuous exchange of the cooling material 602 in different capsules 601, the conductor 1 can be quickly and stably cooled locally, so that the temperature of the conductor 1 will not be too high, and the heat will be transferred to a position away from the conductor 1, and finally the cooling material 602 in the capsule 601 away from the conductor 1 will slowly dissipate to the outside through the protective layer 301 and the armored layer 302.

[0038] Through the outer support 502, the outer convex part 503 and the inner recess 504 of the inner support 501, the multi-stage buffer of the extrusion pressure is realized, and then the capsule 601 in the outer convex part 503 and the inner recess 504 and the capsule 601 in the cavity 505 are used to realize the secondary buffer of the extrusion pressure, so as to realize good anti-extrusion effect, avoid the problem of reduced transmission efficiency caused by deformation of the internal conductor 1, and solve the problem of heat accumulation through the continuous movement of the cooling material 602 in different capsules 601.

[0039] Embodiment two

[0040] In actual use, it is found that when the cable is used in chemical, petroleum, natural gas, mine and other explosion hazardous areas, the above content can realize the cooling of the cable and prevent the cable from catching fire due to high temperature, but the internal insulation layer 201 and the like will be aged after long-time work of the cable, so that the cable is easily punctured by the conductor 1 and explosion occurs, so a cable with explosion-proof capacity needs to be produced to avoid explosion of the cable.

[0041] In order to solve the above technical problems, please refer to Figures 1 to 7As shown, the technical scheme adopted includes the explosion-proof assembly 4, which comprises an explosion-proof net composed of a plurality of staggered ribs 401 arranged on the outer wall of the functional layer 2, a pressure relief groove 402 formed between adjacent ribs 401, a plurality of pressure guide grooves 403 formed in the explosion-proof net and communicating with the pressure relief grooves 402, and an expansion material 405 filled in the pressure relief grooves 402 (the expansion material 405 can be an expanded graphite-ceramized silica gel composite material, which has good heat dissipation, heat conduction and fire extinguishing effects). The plurality of ribs 401 are fixedly connected with the outer wall of the functional layer 2. The explosion-proof assembly 4 further comprises a plurality of energy absorption members 404 arranged between the capsules 601 and the corresponding inner recesses 504, outer protrusions 503 and cavities 505. A plurality of micropores are formed in the energy absorption members 404, which are not shown in the figure.

[0042] On the basis of the above-mentioned embodiments, when the temperature of the conductor 1 rises during use, heat is rapidly conducted to the nearby capsules 601 through the expanded graphite-ceramized silica gel composite material, thereby ensuring that the heat is quickly transferred to the outside, further improving the heat dissipation performance of the overall cable, and delaying the aging speed of the shielding layer 202 and the insulating layer 201.

[0043] At the same time, when the conductor 1 instantaneously breaks through the shielding layer 202 and the insulating layer 201, the expanded graphite-ceramized silica gel composite material in the pressure relief groove 402 absorbs heat and expands, extruding the inner support 501, the capsules 601 close to the conductor 1 and the conductor 1, filling the broken position, preventing further burning of the shielding layer 202 and the insulating layer 201 to cause larger cracks and flame retardation, and simultaneously relieving pressure through the pressure guide groove 403, so that the impact energy is conducted to the adjacent area through the adjacent pressure relief groove 402 and pressure guide groove 403, achieving primary unloading of the energy, and simultaneously achieving secondary pressure relief and buffering through the energy absorption member 404 and the micropores on the energy absorption member 404, achieving partial unloading and pressure guiding of the impact energy, avoiding excessive local pressure, causing the cable to be completely broken, and ensuring the integrity of the cable.

[0044] At the same time, when the shielding layer 202 and the insulating layer 201 are broken, the impact energy can be instantaneously introduced into the pressure relief groove 402 due to the plurality of pressure relief grooves 402 formed between the ribs 401, and then the impact energy is conducted to the inner support 501 and the capsules 601, and then gradually transferred to the outside, and the impact energy is unloaded step by step, achieving step-by-step buffering of the instantaneous energy, and the path is the ribs 401, the pressure relief grooves 402 and the pressure guide grooves 403, the capsules 601 and the inner support 501, the cavities 505, the capsules 601 and the outer support 502, preventing the cable from being broken from the inside to the outside, and preventing explosion.

[0045] At the same time, when the internal capsule 601 is broken, the cooling material 602 can flow out of the capsule 601, rapidly cooling the fire point and the broken position, absorbing a large amount of heat energy, reducing the heat energy of the impact energy, and playing a certain pressure relief role. When the external capsule 601 is burned or broken, the cooling material 602 in the capsule 601 can cover the fire point, play a certain fire extinguishing role, and gradually solidify after the cooling material 602 contacts with the external air and water vapor, thereby preventing further leakage of the cooling material 602 and slightly plugging the broken part, maintaining the integrity of the cable outside.

[0046] By setting the pressure relief groove 402, the pressure guide groove 403, the energy absorbing part 404 and the micropore, the instantaneous impact energy can be unloaded and guided when the shielding layer 202 and the insulation layer 201 are broken, preventing the cable from being completely broken due to excessive instantaneous impact, and then gradually relieving pressure through the capsule 601, the inner support 501 and the like, thereby reducing the damage of the impact energy to the protective layer 301 of the cable, preventing the cable from being completely broken, and enhancing the protection of the cable.

[0047] Embodiment three

[0048] In actual use, it is found that the above-mentioned embodiments solve the problem of flame retardation and explosion prevention in actual use of the cable, but due to the continuous movement of equipment, the cable is easily twisted and stretched, which causes the cable to be continuously stretched and twisted, and further causes damage to the cable, thereby reducing the actual service life of the cable.

[0049] To solve the above technical problems, please refer to Figures 1 to 7 As shown, the technical scheme adopted includes an inner support 501, a plurality of avoidance grooves 506 for avoiding the communication pipe 603 and the connecting pipe 604 are formed on the inner support 501 and the outer support 502, the capsule 601 in the inner recess 504 on the outer support 502 is fixedly connected with the inner wall of the protective layer 301, the capsule 601 in the outer convex part 503 on the inner support 501 is fixedly connected with the rib 401, and the inner recess 504 of the inner support 501 can also be fixedly connected with the rib 401.

[0050] In use, when the cable is subjected to a tensile force, the tensile force acts on the armor layer 302 of the cable, so that the armor layer 302 pulls the outer support 502 through the protective layer 301, since the outer support 502 and the inner support 501 are both processed into a wave shape, so that when stretched, the inner support 501 and the outer support 502 are both stretched and deformed, so that the height of the inner support 501 and the outer support 502 changes, thereby resisting the action of the tensile force, and the capsule 601 and the cooling material 602 provided can resist a part of the tensile force, and when the inner support 501 and the outer support 502 are stretched by the tensile force, the inner support 501 and the outer support 502 are extruded after deformation, thereby causing the cooling material 602 to flow, so that the capsule 601 and the cooling material 602 again offset a part of the tensile force.

[0051] When the cable is subjected to a torsional force, the armor layer 302 drives the fixed capsule 601 to slide in the outer support 502 through the protective layer 301, and the cooling material 602 and the capsule 601 can provide a certain buffer force, the buffer force being opposite in direction to the torsional force, thereby achieving the effect of primary anti-torsion, and since the inner support 501 and the outer support 502 are both provided with the avoidance groove 506 for avoiding the connection pipe 604 and the communication pipe 603, thereby causing the capsule 601 to rotate relative to the inner support 501 and the outer support 502 without extruding the connection pipe 604 and the communication pipe 603 to cause disconnection, when the torsional force is strong, the capsule 601 close to the conductor 1 side moves relative to the inner support 501, thereby achieving the anti-torsion function of the cable and enhancing the anti-torsion effect of the cable, and the inner support 501 and the outer support 502 are both made of a material with good mechanical properties, and still have good support and compression resistance and other mechanical properties under the condition of the avoidance groove 506.

[0052] The capsule 601 movably arranged in the inner support 501 and the outer support 502 causes the capsule 601 to move relatively in the corresponding inner support 501 and the outer support 502 when the cable is subjected to a torsional force, thereby achieving the anti-torsion effect of the cable, and when the cable is subjected to a tensile force, the inner support 501 and the outer support 502 are deformed, thereby achieving the separate stretching between the functional layer 2 and the outer protective layer 3 of the cable, and the buffer of the capsule 601 and the cooling material 602 enhances the tensile resistance effect of the cable.

[0053] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A pressure-resistant, torsion-resistant, explosion-proof cable, comprising a conductor, wherein a functional layer and an outer sheath are disposed on the outer side of the conductor, characterized in that, Also includes: An explosion-proof assembly, comprising an explosion-proof mesh composed of multiple staggered ribs disposed on the outer wall of the functional layer, wherein adjacent ribs form a pressure relief groove; A buffer assembly, comprising an inner support disposed on the outside of a rib, and an outer support disposed on the inside of an outer sheath. Both the inner and outer supports are composed of multiple outward protrusions and inward concave portions, with the inward concave portion of the inner support and the outward protrusion of the outer support forming a cavity. A cooling component, comprising a bladder disposed within the corresponding concave portion, convex portion, and cavity, each bladder being filled with cooling material; The explosion-proof component also includes a plurality of energy-absorbing elements disposed between the bladder and the corresponding inner concave portion, outer convex portion and cavity, and the energy-absorbing elements are provided with a plurality of micropores. Each of the cysts located within the cavity is connected to the adjacent cysts via a connecting tube, and the cysts located within the inner support are connected to the cysts located within the outer support via a connecting tube.

2. The voltage-resistant, torsion-resistant, explosion-proof cable according to claim 1, characterized in that, The explosion-proof mesh has multiple pressure-guiding grooves that communicate with the pressure relief grooves. The pressure relief grooves are filled with expansion material, and the multiple ribs are fixedly connected to the outer wall of the functional layer.

3. The voltage-resistant, torsion-resistant, explosion-proof cable according to claim 1, characterized in that, The outer wall of the protruding part of the inner support is fixedly connected to the concave part of the outer support.

4. The voltage-resistant, torsion-resistant, explosion-proof cable according to claim 1, characterized in that, Both the inner and outer supports are provided with multiple clearance slots.

5. The voltage-resistant, torsion-resistant, explosion-proof cable according to claim 1, characterized in that, The functional layer includes an insulating layer disposed on the outer wall of the conductor, and a shielding layer is disposed on the outer wall of the insulating layer.

6. The voltage-resistant, torsion-resistant, explosion-proof cable according to claim 5, characterized in that, The outer protective layer includes a protective layer, and the outer wall of the protective layer is provided with an armor layer.

7. The voltage-resistant, torsion-resistant, explosion-proof cable according to claim 1, characterized in that, The bladder located in the recess on the outer support is fixedly connected to the inner wall of the protective layer.

8. The voltage-resistant, torsion-resistant, explosion-proof cable according to claim 1, characterized in that, The bladder located in the outward protrusion on the inner support is fixedly connected to the rib.

Images