CN222672674U - Shock-resistant fire-resistant power cable - Google Patents
Shock-resistant fire-resistant power cable Download PDFInfo
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- CN222672674U CN222672674U CN202421125685.8U CN202421125685U CN222672674U CN 222672674 U CN222672674 U CN 222672674U CN 202421125685 U CN202421125685 U CN 202421125685U CN 222672674 U CN222672674 U CN 222672674U
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- nitrile rubber
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- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 18
- 230000035939 shock Effects 0.000 title description 2
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 29
- 239000000919 ceramic Substances 0.000 claims abstract description 19
- 239000002131 composite material Substances 0.000 claims abstract description 18
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 16
- 238000001125 extrusion Methods 0.000 claims abstract description 14
- 239000004945 silicone rubber Substances 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 46
- 229910052751 metal Inorganic materials 0.000 claims description 46
- 239000004020 conductor Substances 0.000 claims description 16
- 229910003460 diamond Inorganic materials 0.000 claims description 4
- 239000010432 diamond Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 abstract description 93
- 239000011241 protective layer Substances 0.000 abstract description 19
- 230000001681 protective effect Effects 0.000 abstract description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract description 3
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 239000003063 flame retardant Substances 0.000 abstract description 3
- 238000004132 cross linking Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Insulated Conductors (AREA)
Abstract
本实用新型公开了一种抗冲击的耐火电力电缆，包括缆芯，所述缆芯包括线芯和填充层，所述线芯和填充层之间通过挤包成型，所述缆芯的外部设置有绕包层，所述绕包层的外部设置有内护套，所述内护套的外部设置有铠装层，所述铠装层的外部设置有复合防护层，所述复合防护层的外部设置有外护套，且铠装层、复合防护层和外护套之间通过挤包成型，该电力电缆的复合防护层由陶瓷化硅橡胶和丁腈橡胶构成双层结构，陶瓷化硅橡胶具有良好的耐火阻燃性能，提高电缆的耐火效果，丁腈橡胶具有良好的缓冲性，在电缆收到外力冲击时起到防护作用，弓形片是镶嵌在丁腈橡胶的内部，在收到外力冲击时发生形变，将冲击力进行缓冲释放，进一步提高电缆的抗冲击性。
The utility model discloses an impact-resistant fire-resistant power cable, comprising a cable core, wherein the cable core comprises a wire core and a filling layer, wherein the wire core and the filling layer are formed by extrusion, a sheath is arranged outside the cable core, an inner sheath is arranged outside the sheath, an armor layer is arranged outside the inner sheath, a composite protective layer is arranged outside the armor layer, an outer sheath is arranged outside the composite protective layer, and extrusion is formed between the armor layer, the composite protective layer and the outer sheath, and the composite protective layer of the power cable is formed by ceramic silicone rubber and nitrile rubber to form a double-layer structure, the ceramic silicone rubber has good fire-resistant and flame-retardant properties, and improves the fire-resistant effect of the cable, the nitrile rubber has good buffering properties, and plays a protective role when the cable is impacted by external force, and the bow-shaped piece is embedded in the interior of the nitrile rubber, and is deformed when impacted by external force, so as to buffer and release the impact force, thereby further improving the impact resistance of the cable.
Description
Technical Field
The utility model relates to the technical field of power cables, in particular to an impact-resistant fire-resistant power cable.
Background
The cable is a kind of electric energy or signal transmission device, usually made up of several or several groups of wires, the information and wire products to realize electromagnetic energy conversion, the power cable is a cable product used for transmitting and distributing high-power electric energy in the main line of the power system, including 1-500KV and above various voltage levels, various insulated power cables, the basic structure of the power cable is made up of four parts of wire core, insulating layer, shielding layer and protective layer, it is used in urban underground electric network, power station outgoing line, power supply in the industrial and mining enterprises and power transmission line under sea water of crossing river, its product kind is numerous, the application range is very extensive, involve the electric power, building, communication, trade such as making.
The Chinese patent publication number is CN208796704U, and the authorized publication day is 2019, 04 and 26 days, and an impact-resistant fire-resistant power cable comprises a wire core, wherein the wire core comprises a conductor and an insulating sleeve, the conductor is arranged in the insulating sleeve, a first filling layer is arranged outside the wire core, a high-temperature-resistant ribbon is arranged outside the wire core and the first filling layer, and a fire-resistant shell is arranged outside the high-temperature-resistant ribbon. The insulating sleeve provided with the silicone rubber material has excellent electrical insulation performance, improves the fire resistance of the cable, is provided with the filling layer of ceramic micro powder and toughened ceramic powder, has low density and strong mechanical resistance, can well improve the buffer capacity of the cable so as to strengthen the impact resistance of the cable, and is provided with the metal glaze layer, so that the fire resistance of the cable can be enhanced, the metal protective shell can be protected from oxidation, and the color of the cable can be attractive.
The existing power cable is not strong in mechanical resistance, an external protective layer is easy to break when being impacted in the using process, the service life of the power cable is shortened, potential safety hazards for breakdown of the power cable exist, the using effect of the power cable is reduced, and the using requirement cannot be met.
Disclosure of utility model
The utility model aims to provide an impact-resistant fire-resistant power cable, which aims to solve the problems that the prior power cable is low in mechanical resistance, an external protective layer is easy to break when the impact is received in the using process, the service life of the power cable is shortened, the potential safety hazard of breaking down the power cable exists, the using effect of the power cable is reduced, and the using requirement cannot be met.
The fire-resistant power cable comprises a cable core, wherein the cable core comprises five wire cores and a filling layer, the five wire cores are arranged in the cable core at equal intervals in a round shape, the wire cores and the filling layer are formed by extrusion, a wrapping layer is arranged on the outer portion of the cable core and is connected with the cable core in a wrapping mode, an inner sheath is arranged on the outer portion of the wrapping layer, the inner sheath and the wrapping layer are formed by extrusion, an armor layer is arranged on the outer portion of the inner sheath and is attached to the inner sheath, a composite protective layer is arranged on the outer portion of the armor layer, an outer sheath is arranged on the outer portion of the composite protective layer, and the armor layer, the composite protective layer and the outer sheath are formed by extrusion.
Preferably, the wire core comprises a conductor, a shielding layer, a metal net sleeve and an insulating layer, wherein the conductor is formed by twisting a plurality of copper wires, the shielding layer is arranged outside the conductor, the metal net sleeve is arranged outside the shielding layer, the insulating layer is arranged outside the metal net sleeve, and the conductor, the shielding layer, the metal net sleeve and the insulating layer are formed by extrusion.
Preferably, the composite protective layer comprises a ceramic silicone rubber layer and a nitrile rubber layer, wherein the ceramic silicone rubber layer is arranged outside the nitrile rubber layer, the ceramic silicone rubber layer and the nitrile rubber layer are integrated, and the nitrile rubber layer is attached to the armor layer.
Preferably, the inside of nitrile rubber layer is provided with the bow-shaped piece, and the bow-shaped piece is provided with six at least, and bow-shaped piece and nitrile rubber layer set up as an organic wholely, the bow-shaped piece is circular equidistance setting in the inside of nitrile rubber layer, and the top of bow-shaped piece outwards sets up.
Preferably, the metal mesh cover comprises a first metal filament and a second metal filament, at least six first metal filaments and at least six second metal filaments are arranged, and the first metal filament and the second metal filament are crossed to form a diamond shape.
Preferably, the filling layer is arranged at the gaps of the five wire cores, the filling layer adopts epoxy resin, the wrapping layer adopts a high-temperature-resistant ribbon, and the inner sheath and the outer sheath both adopt polyethylene rubber.
Preferably, the outer sheath is subjected to irradiation crosslinking treatment.
Compared with the prior art, the utility model has the beneficial effects that:
1. According to the device, through the arrangement of the composite protective layer, the composite protective layer is of a double-layer structure formed by the ceramic silicon rubber layer and the nitrile rubber layer, the ceramic silicon rubber layer has good fire resistance and flame retardance, the fire resistance effect of the cable is improved, the nitrile rubber layer has good buffering property, the protective effect is achieved when the cable receives external force impact, the arched sheets are inlaid in the nitrile rubber layer, deformation occurs when the external force impact is received, impact force is buffered and released, and the impact resistance of the cable is further improved;
2. According to the device, through the arrangement of the metal net sleeve, the metal net sleeve increases the structural strength of the wire core, the impact resistance of the cable is further improved, and the metal net sleeve is formed by intersecting first metal wires and second metal wires in a diamond shape, so that the metal net sleeve is convenient to be unfolded for subsequent use;
3. The device of the utility model carries out irradiation crosslinking treatment on the outer sheath, the irradiation crosslinking reaction can improve the char formation of the polymer, further improve the flame retardance of the polymer, and the outer sheath subjected to irradiation crosslinking treatment has excellent flame retardance, high heat resistance, excellent physical and mechanical properties and improves the flame-retardant effect of the cable.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a cross-sectional view of a wire core of the present utility model;
FIG. 3 is a diagram of a metal mesh sleeve structure according to the present utility model;
Fig. 4 is a block diagram of a composite protective layer according to the present utility model.
The cable comprises a cable core, a filling layer, a wrapping layer, a 5, an inner sheath, a 6, an armor layer, a 7, a composite protective layer, a 8, an outer sheath, a9, a conductor, a 10, a shielding layer, a 11, a metal net sleeve, a 12, an insulating layer, a 13, a first metal strand, a 14, a second metal strand, a 15, a ceramic silicone rubber layer, a 16, a nitrile rubber layer, a 17 and an arch piece.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-4, an embodiment of the utility model provides an impact-resistant fire-resistant power cable, which comprises a cable core 1, wherein the cable core 1 comprises a cable core 2 and a filling layer 3, the cable core 2 is provided with five cable cores, the five cable cores 2 are circularly and equidistantly arranged in the cable core 1, the cable core 2 and the filling layer 3 are formed by extrusion, a wrapping layer 4 is arranged on the outer part of the cable core 1 and is connected with the cable core 1 in a winding manner, an inner sheath 5 is arranged on the outer part of the wrapping layer 4, the inner sheath 5 and the wrapping layer 4 are formed by extrusion, an armor layer 6 is arranged on the outer part of the inner sheath 5, the armor layer 6 is attached to the inner sheath 5, a composite protective layer 7 is arranged on the outer part of the armor layer 6, an outer sheath 8 is arranged on the outer part of the composite protective layer 7, and the armor layer 6, the composite protective layer 7 and the outer sheath 8 are formed by extrusion.
Referring to fig. 1 and 2, the wire core 2 includes a conductor 9, a shielding layer 10, a metal mesh 11 and an insulating layer 12, the conductor 9 is formed by twisting a plurality of copper wires, the shielding layer 10 is arranged outside the conductor 9, the metal mesh 11 is arranged outside the shielding layer 10, the insulating layer 12 is arranged outside the metal mesh 11, the conductor 9, the shielding layer 10, the metal mesh 11 and the insulating layer 12 are formed by extrusion, the wire core 2 is formed by the conductor 9, the shielding layer 10 and the insulating layer 12 enable the wire core 2 to have shielding and insulating properties, the metal mesh 11 increases the structural strength of the wire core 2, and further improves the impact resistance of the cable.
Referring to fig. 1 and 4, the composite protective layer 7 includes a ceramic silicone rubber layer 15 and a nitrile rubber layer 16, the ceramic silicone rubber layer 15 is disposed outside the nitrile rubber layer 16, and the ceramic silicone rubber layer 15 and the nitrile rubber layer 16 are integrally disposed, the nitrile rubber layer 16 is attached to the armor layer 6, and a double-layer structure is formed by the ceramic silicone rubber layer 15 and the nitrile rubber layer 16, the ceramic silicone rubber layer 15 has good fire-resistant and flame-retardant properties, the fire-resistant effect of the cable is improved, the ceramic silicone rubber layer 16 has good fire-resistant properties, and the nitrile rubber layer 16 has good buffering type, and plays a protective role when the cable receives an external force impact.
Referring to fig. 1 and 4, the inside of the nitrile rubber layer 16 is provided with arcuate pieces 17, the arcuate pieces 17 are provided with at least six, and the arcuate pieces 17 and the nitrile rubber layer 16 are integrally arranged, the arcuate pieces 17 are circularly equidistantly arranged in the nitrile rubber layer 16, the top of the arcuate pieces 17 are outwards arranged, the structural strength can be increased by arranging the arcuate pieces 17 in the nitrile rubber layer 16, deformation can be generated when external force impact is received, impact force is buffered and released, and the impact resistance of the cable is further improved.
Referring to fig. 2 and 3, the metal mesh 11 includes a first metal filament 13 and a second metal filament 14, at least six first metal filaments 13 and at least six second metal filaments 14 are disposed, and the first metal filament 13 and the second metal filament 14 are crossed and are disposed in a diamond shape.
Referring to fig. 1, a filling layer 3 is disposed at a gap between five wire cores 2, the filling layer 3 is made of epoxy resin, a high-temperature-resistant ribbon is used for wrapping a layer 4, and both an inner sheath 5 and an outer sheath 8 are made of polyethylene rubber.
Referring to fig. 1, the outer sheath 8 is subjected to irradiation crosslinking treatment, and the irradiation crosslinking reaction can improve the char formation of the polymer, further improve the flame retardance, high heat resistance and physical and mechanical properties of the outer sheath 8, and improve the fire resistance effect of the cable by performing irradiation crosslinking treatment on the outer sheath 8.
What is not described in detail in this specification is prior art known to those skilled in the art.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides an impact-resistant fire-resistant power cable, includes cable core (1), its characterized in that, cable core (1) includes sinle silk (2) and filling layer (3), and sinle silk (2) are provided with five, and five sinle silk (2) are circular equidistance setting in the inside of cable core (1), through extrusion molding between sinle silk (2) and filling layer (3), the outside of cable core (1) is provided with around covering (4), and winds covering (4) and cable core (1) winding connection, around the outside of covering (4) is provided with inner sheath (5), and through extrusion molding between inner sheath (5) and the covering (4), the outside of inner sheath (5) is provided with armor (6), and armor (6) are laminated with inner sheath (5), the outside of armor (6) is provided with composite protection layer (7), and between armor (6), composite protection layer (7) and the oversheath (8) through extrusion molding between covering (4) and cable core (1), the outside of armor layer (6) is provided with ceramic protection layer (16) and ceramic protection layer (16), and ceramic silicone rubber layer (15) and nitrile rubber layer (16) set up as an organic wholely, nitrile rubber layer (16) laminate with armor (6) mutually, the inside of nitrile rubber layer (16) is provided with bow-shaped piece (17), and bow-shaped piece (17) are provided with six at least, and bow-shaped piece (17) set up as an organic wholely with nitrile rubber layer (16), bow-shaped piece (17) are circular equidistance setting in the inside of nitrile rubber layer (16), and the top of bow-shaped piece (17) sets up outwards.
2. The fire-resistant power cable of claim 1 wherein the wire core (2) comprises a conductor (9), a shielding layer (10), a metal mesh (11) and an insulating layer (12), wherein the conductor (9) is formed by twisting a plurality of copper wires, the shielding layer (10) is arranged outside the conductor (9), the metal mesh (11) is arranged outside the shielding layer (10), the insulating layer (12) is arranged outside the metal mesh (11), and the conductor (9), the shielding layer (10), the metal mesh (11) and the insulating layer (12) are formed by extrusion.
3. An impact resistant fire resistant power cable according to claim 2 wherein the metal mesh (11) comprises a first metal filament (13) and a second metal filament (14), the first metal filament (13) and the second metal filament (14) are each provided with at least six, and the first metal filament (13) and the second metal filament (14) are crossed in a diamond shape.
4. The impact-resistant fire-resistant power cable according to claim 1, wherein the filling layer (3) is arranged at a gap of the five wire cores (2), the filling layer (3) is made of epoxy resin, the wrapping layer (4) is made of high-temperature-resistant ribbon, and the inner sheath (5) and the outer sheath (8) are made of polyethylene rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421125685.8U CN222672674U (en) | 2024-05-22 | 2024-05-22 | Shock-resistant fire-resistant power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421125685.8U CN222672674U (en) | 2024-05-22 | 2024-05-22 | Shock-resistant fire-resistant power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222672674U true CN222672674U (en) | 2025-03-25 |
Family
ID=95063921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421125685.8U Active CN222672674U (en) | 2024-05-22 | 2024-05-22 | Shock-resistant fire-resistant power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222672674U (en) |
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- 2024-05-22 CN CN202421125685.8U patent/CN222672674U/en active Active
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