CN222394608U - cable - Google Patents
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- CN222394608U CN222394608U CN202323561381.4U CN202323561381U CN222394608U CN 222394608 U CN222394608 U CN 222394608U CN 202323561381 U CN202323561381 U CN 202323561381U CN 222394608 U CN222394608 U CN 222394608U
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- cable
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
本实用新型涉及电力电缆技术领域，提供一种电缆，包括：多个缆芯、耐火填充单元、内护层、金属铠装层以及外护层，多个缆芯设于内护层的内部，耐火填充单元填充于相邻两个缆芯之间和缆芯与内护层之间；金属铠装层设于内护层与外护层之间；其中内护层包括耐火层，外护层包括低烟高阻燃无卤聚烯烃材料制成件。本实用新型的电缆阻燃、耐火性能好，在发生火灾时能够正常运行，延长电缆运行时长，安全性高且环保。
The utility model relates to the technical field of power cables, and provides a cable, including: multiple cable cores, fire-resistant filling units, inner sheaths, metal armor layers and outer sheaths, wherein the multiple cable cores are arranged inside the inner sheath, the fire-resistant filling units are filled between two adjacent cable cores and between the cable cores and the inner sheaths; the metal armor layer is arranged between the inner sheath and the outer sheath; wherein the inner sheath includes a fire-resistant layer, and the outer sheath includes a low-smoke, high-flame-retardant, halogen-free polyolefin material. The cable of the utility model has good flame retardant and fire-resistant properties, can operate normally in the event of a fire, extends the cable operation time, is highly safe and environmentally friendly.
Description
Technical Field
The utility model relates to the technical field of power cables, in particular to a cable.
Background
Cables are used to transmit electricity and can carry signals or perform electromagnetic energy conversion. With the development of the communication industry, the demand for cables is also increasing.
Most of the existing cables adopt a fire-resistant sheath layer and fire-retardant outer sheath structure, and have low fire-resistant temperature and short fire-resistant time. When a fire disaster occurs, the electric power can not be continuously supplied, so that time can not be effectively spent for people evacuation and fire extinguishment, and a large amount of toxic gas and smoke can be released during combustion, so that people evacuation is not facilitated, and the safety of people is influenced.
Disclosure of utility model
The utility model provides a cable which is used for solving the problems of poor flame retardance and fire resistance and low safety in the case of fire disaster in the prior art.
The utility model provides a cable which comprises a plurality of cable cores, fire-resistant filling units, an inner protective layer, a metal armor layer and an outer protective layer, wherein the cable cores are arranged in the inner protective layer, the fire-resistant filling units are filled between two adjacent cable cores and between the cable cores and the inner protective layer, the metal armor layer is arranged between the inner protective layer and the outer protective layer, the inner protective layer comprises a fire-resistant layer, and the outer protective layer comprises a low-smoke high-flame-retardant halogen-free polyolefin material manufactured piece.
According to the cable provided by the utility model, the cable core comprises a copper conductor, a first shielding layer, an insulating layer, a second shielding layer and a metal shielding layer which are sequentially arranged from inside to outside, wherein the first shielding layer comprises a semiconductive shielding layer, the second shielding layer comprises a semiconductive insulating shielding layer, and the insulating layer comprises a crosslinked polyolefin insulating layer.
According to the cable provided by the utility model, the cable further comprises a waterproof layer, and the waterproof layer is arranged between the fire-resistant filling unit and the inner protective layer.
According to the cable provided by the utility model, the cable further comprises a first wrapping tape, wherein the first wrapping tape is positioned between the waterproof layer and the fire-resistant filling unit and is wound on the outer wall surface of the fire-resistant filling unit.
According to the cable provided by the utility model, the cable further comprises a second wrapping belt, and the second wrapping belt is wound on the outer wall surface of the inner protective layer.
According to the cable provided by the utility model, the cable further comprises a third wrapping band, and the third wrapping band is wound on the outer wall surface of the metal armor layer.
According to the cable provided by the utility model, the first wrapping tape, the second wrapping tape and the third wrapping tape are fireproof wrapping tapes.
The waterproof layer comprises an aluminum-plastic composite waterproof layer, and the metal armor layer comprises a galvanized steel armor layer.
According to the cable provided by the utility model, the fireproof layer comprises a ceramic fireproof layer, and the ceramic fireproof layer comprises a ceramic polyolefin manufactured part and ceramic fireproof silicon rubber.
According to the utility model, the fire-resistant filling unit comprises glass fiber ropes and/or ceramic filling ropes.
According to the cable, the inner protective layers and the outer protective layers are sequentially arranged outside the cable cores, the inner protective layers are fire-resistant layers, the outer protective layers are made of low-smoke high-flame-retardant halogen-free polyolefin materials, double-layer protection is achieved, combustion improver can be effectively prevented from entering the cable cores when fire disaster occurs, flame retardance and good fire resistance effects are achieved, the fire-resistant filling units are arranged between the cable cores, the cable can be guaranteed to be round, flame can be blocked, the damage to the inner cable cores is avoided, and the metal armor layer is arranged between the inner protective layers and the outer protective layers, so that the mechanical performance of the cable is improved, and the cable cores are protected. The cable has the advantages of flame retardance, good fire resistance, normal operation when a fire disaster occurs, long operation time of the cable, high safety and environmental protection.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of a cable provided by the present utility model;
FIG. 2 is a schematic cross-sectional view of a cable core provided by the present utility model;
reference numerals:
1. The cable comprises a cable core, 11, copper conductors, 12, a first shielding layer, 13, an insulating layer, 14, a second shielding layer, 15, a metal shielding layer, 2, a fire-resistant filling unit, 3, a first wrapping tape, 4, a waterproof layer, 5, an inner protective layer, 6, a second wrapping tape, 7, a metal armor layer, 8, a third wrapping tape and 9, an outer protective layer.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In describing embodiments of the present utility model, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "coupled" should be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected via an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.
In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.
Most of the prior medium-voltage fire-resistant power cables have fire-resistant sheath layers and fire-resistant outer sheath structures, have poor fire resistance, low fire resistance temperature (750 ℃) and short fire resistance time (90 min), and cannot be electrified continuously under the condition of external high temperature. And hidden danger is brought to life and property safety of people in case of fire. Based on the above, the utility model provides a cable, which has improved fire resistance and flame retardance.
The cable provided by the present utility model is described below with reference to fig. 1 to 2.
The utility model provides a cable, which comprises a plurality of cable cores 1, fire-resistant filling units 2, an inner protective layer 5, a metal armor layer 7 and an outer protective layer 9, wherein the cable cores 1 are arranged in the inner protective layer 5, the fire-resistant filling units 2 are filled between two adjacent cable cores 1 and between the cable cores 1 and the inner protective layer 5, the metal armor layer 7 is arranged between the inner protective layer 5 and the outer protective layer 9, the inner protective layer 5 comprises a fire-resistant layer, and the outer protective layer 9 comprises a low-smoke high-flame-retardant halogen-free polyolefin material manufactured piece.
The outer protective layer 9 is a low-smoke high-flame-retardant halogen-free polyolefin material manufactured part, has good flame retardant effect, greatly reduces indexes such as heat release during combustion, flame spread, smoke density during combustion and the like in flame retardant performance, is environment-friendly, and protects the internal structure from being damaged during fire.
Referring to fig. 1, 3 cable cores 1 in the utility model are arranged in an inner protective layer 5, the inner protective layer 5 is a fire-resistant layer, which plays a fire-resistant role to protect the inner cable cores 1, and further, a fire-resistant filling unit 2 is filled between two adjacent cable cores 1, and the fire-resistant filling unit 2 is also arranged between the cable cores 1 and the inner protective layer 5, so that the roundness of the cable is ensured, and the flame can be blocked in case of fire, thereby avoiding damaging the inner cable cores 1.
According to the utility model, the metal armor layer 7 is further arranged between the outer protective layer 9 and the inner protective layer 5, the metal armor layer 7 plays roles in tensile and compression resistance, the internal structure of the cable core 1 is protected, and the cable core 1 is prevented from being damaged under the action of external force.
According to the cable, the inner protective layers 5 and the outer protective layers 9 are sequentially arranged outside the cable cores 1, wherein the inner protective layers 5 are fire resistant layers, the outer protective layers 9 are made of low-smoke high-flame-retardant halogen-free polyolefin materials, double-layer protection is achieved, combustion improvers can be effectively prevented from entering the cable cores 1 when fire disaster occurs, flame retardance and good flame resistance effects are achieved, the flame-resistant filling units 2 are arranged between the cable cores 1 and the cable cores 1, the cable roundness can be guaranteed, flame can be blocked, the damage to the inner cable cores 1 is avoided, and the metal armor layers 7 are arranged between the inner protective layers 5 and the outer protective layers 9, so that the mechanical performance of the cable is improved, and the cable cores 1 are protected. The cable has the advantages of flame retardance, good fire resistance, normal operation when a fire disaster occurs, long operation time of the cable, high safety and environmental protection.
Referring to fig. 2, the cable core 1 in the present utility model includes a copper conductor 11, a first shielding layer 12, an insulating layer 13, a second shielding layer 14, and a metal shielding layer 15 sequentially disposed from inside to outside, wherein the first shielding layer 12 includes a semiconductive shielding layer, the second shielding layer 14 includes a semiconductive insulating shielding layer, and the insulating layer 13 includes a crosslinked polyolefin insulating layer 13.
The copper conductor 11 is a soft copper conductor, and mainly plays a role in transmitting electric energy. The semi-conductive shielding layer is used for balancing the electric field, equipotential with the soft copper conductor and avoiding partial discharge between the soft copper conductor and the insulating layer 13. The cross-linked polyolefin insulating layer 13 mainly prevents the outward diffusion of current, transmits the current in one direction, and protects the soft copper conductor from corrosion and damage. The semiconductor insulating shielding layer is also used for equalizing the electric field, equipotential with the metal shielding layer 15, and avoiding partial discharge between the insulating layer 13 and the metal shielding layer 15. The metal shield 15 mainly plays a role of shielding an electric field and transmitting a short-circuit current.
Further, the center of the cable core 1 is also provided with a reinforcement for improving the mechanical properties of the cable.
The cable further comprises a waterproof layer 4, wherein the waterproof layer 4 is arranged between the fire-resistant filling unit 2 and the inner protective layer 5, moisture is prevented from entering the cable core 1 in the radial direction in the installation and operation processes of the cable, oxygen can be isolated when the cable burns in the case of fire, the oxygen is prevented from entering as a combustion improver, flame is effectively prevented from entering the cable core 1, and safe and reliable operation of a circuit is ensured.
The cable provided by the utility model further comprises a first wrapping belt 3, wherein the first wrapping belt 3 is positioned between the waterproof layer 4 and the fire-resistant filling unit 2, and is wound on the outer wall surface of the fire-resistant filling unit 2. The first wrapping belt 3 is used for isolating the fireproof filling unit 2 from the waterproof layer 4, so that construction and laying are facilitated.
The cable provided by the utility model further comprises a second wrapping belt 6, wherein the second wrapping belt 6 is wound on the outer wall surface of the inner protective layer 5 and is used for isolating the inner protective layer 5 from the metal armor layer 7, so that the cable is convenient to construct and lay.
The cable provided by the utility model further comprises a third wrapping belt 8, wherein the third wrapping belt 8 is wound on the outer wall surface of the metal armor layer 7 and is used for isolating the metal armor layer 7 from the outer protective layer 9, so that the cable is convenient to construct and lay.
The first wrapping belt 3, the second wrapping belt 6 and the third wrapping belt 8 are fireproof wrapping belts, so that flame retardant and fireproof effects are achieved, and flame retardant and fireproof effects of the cable are enhanced.
The waterproof layer 4 comprises an aluminum-plastic composite waterproof layer 4, and the metal armor layer 7 comprises a galvanized steel armor layer.
The fire-resistant layer comprises a ceramic fire-resistant layer, wherein the ceramic fire-resistant layer comprises a ceramic polyolefin product and ceramic fire-resistant silicon rubber, and a ceramic junction shell layer is formed when the ceramic fire-resistant layer is continuously combusted at high temperature, and the highest temperature resistance can reach more than 1000 ℃.
The refractory filler unit 2 in the present utility model comprises glass fiber ropes and/or ceramic filler ropes.
The utility model adds fire-resistant technology on the basis of common fire-resistant cable, and has more reasonable structure and longer fire-resistant time, and the fire-resistant structure of ceramic filling, fire-resistant wrapping and ceramic polyolefin sheath can ensure that the bending radius of the cable is not improved when the cable encounters fire, so that the cable is laid and operated in various complex environments, the effective operation time of the cable is longer when the fire occurs, the destructive power influenced by the fire is smaller, and the cable operation is more stable.
Compared with the cable in the prior art, the cable disclosed by the utility model has excellent fire resistance and waterproof performance, can still continuously work for more than 180 minutes at the external temperature of 950 ℃, can be used for rescuing on site, and does not generate toxic gas and a large amount of smoke under the condition of burning.
The cable provided by the utility model can be a fire-resistant power cable with a rated voltage of 6-35 kV and reliable operation, and the fire-resistant and flame-retardant structure is adopted, and flame retardation, water resistance and fire resistance are simultaneously carried out from the inside and the outside of the cable, so that the indexes such as flame spread, smoke density, toxicity index and the like generated by flame when the cable burns are effectively controlled, and the fire resistance when a fire disaster occurs can be improved, so that the cable is safe and reliable when the cable runs for a long time.
The cable disclosed by the utility model can be suitable for environments such as high-rise buildings, airport terminal buildings, subway stations and the like, can improve the safe operation of a circuit, can be used in metal processing, mining, railway and metallurgical industries in large scale, ensures the stable operation of the whole operation line, improves the power supply quality and prolongs the service life of equipment.
It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present utility model, and not for limiting the same, and although the present utility model has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiments of the present utility model.
Claims (9)
1. The cable is characterized by comprising a plurality of cable cores, fire-resistant filling units, an inner protective layer, a metal armor layer and an outer protective layer, wherein the cable cores are arranged in the inner protective layer, the fire-resistant filling units are filled between two adjacent cable cores and between the cable cores and the inner protective layer, the metal armor layer is arranged between the inner protective layer and the outer protective layer, the inner protective layer comprises a fire-resistant layer, and the outer protective layer comprises a low-smoke high-flame-retardant halogen-free polyolefin material manufactured piece;
The cable also comprises a waterproof layer, wherein the waterproof layer is arranged between the fire-resistant filling unit and the inner protective layer.
2. The cable of claim 1, wherein the cable core comprises a copper conductor, a first shielding layer, an insulating layer, a second shielding layer, and a metallic shielding layer disposed in that order from the inside to the outside, wherein the first shielding layer comprises a semiconductive conductive shielding layer, the second shielding layer comprises a semiconductive insulating shielding layer, and the insulating layer comprises a crosslinked polyolefin insulating layer.
3. The cable of claim 1, further comprising a first wrapping tape positioned between the waterproof layer and the fire-resistant filler unit and wrapped around an outer wall surface of the fire-resistant filler unit.
4. A cable according to claim 3, further comprising a second wrapping tape wrapped around the outer wall of the inner sheath.
5. The cable of claim 4, further comprising a third taping tape wrapped around an outer wall surface of the metallic armor layer.
6. The cable of claim 5, wherein the first, second, and third wrapping bands are fire resistant wrapping bands.
7. The cable of claim 1, wherein the waterproof layer comprises an aluminum-plastic composite waterproof layer and the metal armor layer comprises a galvanized steel armor layer.
8. The cable of claim 1, wherein the flame retardant layer comprises a ceramic flame retardant layer comprising a ceramic polyolefin formulation and a ceramic flame retardant silicone rubber.
9. The cable according to claim 1, wherein the fire-resistant filler unit comprises glass fiber rope and/or ceramic filler rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323561381.4U CN222394608U (en) | 2023-12-26 | 2023-12-26 | cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323561381.4U CN222394608U (en) | 2023-12-26 | 2023-12-26 | cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222394608U true CN222394608U (en) | 2025-01-24 |
Family
ID=94293936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323561381.4U Active CN222394608U (en) | 2023-12-26 | 2023-12-26 | cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222394608U (en) |
-
2023
- 2023-12-26 CN CN202323561381.4U patent/CN222394608U/en active Active
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