CN217333708U - Low-smoke halogen-free high-voltage power cable - Google Patents
Low-smoke halogen-free high-voltage power cable Download PDFInfo
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- CN217333708U CN217333708U CN202221277974.0U CN202221277974U CN217333708U CN 217333708 U CN217333708 U CN 217333708U CN 202221277974 U CN202221277974 U CN 202221277974U CN 217333708 U CN217333708 U CN 217333708U
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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
The utility model discloses a low smoke and zero halogen high voltage power cable, this low smoke and zero halogen high voltage power cable include from interior to exterior conductor, conductor shielding layer, insulating layer, insulation shielding layer, semiconductor buffer layer, metal sheath layer, anti-corrosion coating, non-metal sheath layer, keep off fire layer and conducting layer that set gradually, the conducting layer with non-metal sheath layer is the polyolefin layer. The utility model discloses a low smoke and zero halogen high voltage power cable's conducting layer and non-metallic sheath layer set up respectively in the inboard and the outside that keep off the fire layer, and conducting layer and non-metallic sheath layer are the polyolefin layer for conducting layer and non-metallic sheath layer can not produce too much halogen at the in-process of burning, have promoted the halogen-free performance of cable. The utility model discloses low smoke and zero halogen high voltage power cable is applicable in fire-retardant occasion that requires height, secondary harm are little if: subway, ship, nuclear power station, cell phone base station, public venue, program-controlled exchange room, computer room and various public places with dense people and smoke.
Description
Technical Field
The utility model relates to a power cable technical field, in particular to low smoke and zero halogen high voltage power cable.
Background
The tunnel laying is a common laying mode of high-voltage cables, has certain requirements on fire safety, has higher requirements on fire safety in particular in urban pipe corridors, rail transit, power stations and other occasions, and ensures low halogen content, low smoke density and flame retardant property when a fire disaster occurs. The outer side of the metal sheath of the high-voltage cable is provided with a thicker non-metal material, the thickness of the metal sheath is increased along with the rise of the voltage level, the larger the section of the cable is, the larger the unit length volume of the cable is, and the performances of low smoke, zero halogen, flame retardance and the like of the cable face a great challenge.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a low smoke and zero halogen high voltage power cable aims at solving and how to improve the cable and do not have the steamed performance.
In order to achieve the above object, the utility model provides a low smoke and zero halogen high voltage power cable includes conductor, conductor shielding layer, insulating layer, insulation shielding layer, semiconductor buffer layer, metal sheath layer, anti-corrosion coating, non-metal sheath layer, fire blocking layer and the conducting layer that from interior to exterior set gradually, the conducting layer with non-metal sheath layer is the polyolefin layer.
Optionally, the non-metal sheath layer is a halogen-free low-smoke polyolefin layer.
Optionally, the conductive layer is a semiconductive halogen-free low smoke polyolefin layer.
Optionally, the corrosion prevention layer is a flame-retardant asphalt layer or a halogen-free flame-retardant hot melt adhesive layer.
Optionally, both the inner and outer surfaces of the metal sheath layer are smooth surfaces.
Optionally, the metal sheath layer is a lead sheath; or the metal sheath layer is an aluminum sheath; or the metal sheath layer is a composite sheath formed by copper wire shielding and metal plastics.
Optionally, the fire barrier layer is a ceramic silicone rubber layer.
Optionally, the thickness of the fire barrier layer is 1mm to 2.5 mm.
Optionally, the conductor shielding layer includes a first conductor shielding layer and a second conductor shielding layer, the first conductor shielding layer is formed by wrapping a semi-conductive tape, and the second conductor shielding layer is formed by extruding a semi-conductive shielding material.
The utility model provides an among the technical scheme, the conducting layer sets up in the outside of cable, the conducting layer adopts the polyolefin to make, make at the in-process that sends the conflagration, if the cable is burnt, the conducting layer that adopts the polyolefin to make is by the in-process of burning, can not produce too much halogen, and toxicity and corrosive gas release amount are few, the smog concentration of production is low, it sets up in the conducting layer inboardly to keep off the fire layer, can be fire-retardant effectively, the inboard on keeping off the fire layer is provided with non-metal sheath layer, as in the cable with keep off the adjacent non-metal sheath layer in fire layer, need bear higher temperature at the in-process that keeps off fire layer anti-burning, the non-metal sheath layer that adopts the polyolefin to make, even keep off the fire layer and be lighted by the non-metal sheath layer after burning, also can not produce too much halogen.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a low-smoke halogen-free high-voltage power cable according to an embodiment of the present invention.
The reference numbers indicate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Cable with a protective layer | 7 | |
| 1 | Conductor | 8 | |
| 2 | Conductor shielding layer | 9 | Fire barrier |
| 3 | Insulating |
10 | Conductive layer |
| 4 | |
20 | First conductor shield |
| 5 | |
21 | Second conductor shield |
| 6 | Metal sheath layer |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiments of the present invention, the directional indications are only used for explaining the relative position relationship between the components, the motion situation, etc. under a certain posture (as shown in the drawings), and if the certain posture is changed, the directional indications are changed accordingly.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The tunnel laying is a common laying mode of high-voltage cables, has certain requirements on fire safety, has higher requirements on fire safety in particular in urban pipe corridors, rail transit, power stations and other occasions, and ensures low halogen content, low smoke density and flame retardant property when a fire disaster occurs. The outer side of the metal sheath of the high-voltage cable is provided with a thicker non-metal material, the thickness of the metal sheath is increased along with the rise of the voltage level, the larger the section of the cable is, the larger the unit length volume of the cable is, and the performances of low smoke, zero halogen, flame retardance and the like of the cable face a great challenge.
Based on the above conception and problem, the utility model provides a low smoke and zero halogen high voltage power cable 100.
As shown in fig. 1, the low-smoke halogen-free high-voltage power cable 100 includes a conductor 1, a conductor shielding layer 2, an insulating layer 3, an insulating shielding layer 4, a semiconductor buffer layer 5, a metal sheath layer 6, an anti-corrosion layer 7, a non-metal sheath layer 8, a fire blocking layer 9 and a conductive layer 10, which are sequentially arranged from inside to outside, and the conductive layer 10 and the non-metal sheath layer 8 are polyolefin layers.
In one embodiment, the conductive layer 10 and the non-metal sheath layer 8 are polyolefin layers, the conductive layer 10 is disposed on the outermost side of the cable 100, the conductive layer 10 is made of polyolefin, so that, if the cable 100 is burned during the transmission of a fire, the conductive layer 10 made of polyolefin does not generate excessive halogen during the burning, and the release amount of toxic and corrosive gases is very little, the concentration of generated smoke is low, the fire blocking layer 9 is arranged on the inner side of the conductive layer 10, which can effectively resist fire, the inner side of the fire blocking layer 9 is provided with the non-metal sheath layer 8 which is used as the non-metal sheath layer 8 adjacent to the fire blocking layer 9 in the cable 100, the fire-proof layer 9 needs to bear higher temperature in the process of fire resistance, the non-metal sheath layer 8 made of polyolefin is adopted, even if the non-metallic sheath layer 8 is ignited after the flame-out layer 9 is burned through, excessive halogen is not generated. In addition, the conductive layer 10 made of polyolefin can have high electrical insulation and high water resistance.
Further, the non-metal sheath layer 8 is a halogen-free low-smoke polyolefin layer. The conductive layer 10 is a semiconductive halogen-free low-smoke polyolefin layer. Nonmetal restrictive coating 8 in this embodiment can adopt MG80012H/J (90 ℃ of zero halogen low smoke flame retardant polyolefin material), MG80015 (zero halogen low smoke flame retardant polyolefin elastomer material), MG80011 (zero halogen low smoke flame retardant polyolefin separates oxygen layer material) and makes, make nonmetal restrictive coating 8 produced halogen content in the combustion process less, conducting layer 10 adopts semiconduction halogen-free low smoke polyolefin to make, its main function is as outmost, guarantee its inseparable laminating with layer 9 that keeps off a fire, and in the process of taking place the burning, can not produce too much halogen, make this embodiment low smoke zero halogen high voltage power cable 100 can be applicable to fire-retardant requirement height, the occasion that the secondary harm is little is like: subway, ship, nuclear power station, mobile phone base station (radio frequency cable 100), public venue (such as stadium, exhibition hall), high-rise building (BV line), program-controlled exchange room, computer room and various public places with dense people and smoke.
Furthermore, in the low smoke zero halogen high voltage power cable 100, the anti-corrosion layer 7 is a flame retardant asphalt layer or a halogen-free flame retardant hot melt adhesive layer. The anti-corrosion layer 7 is arranged on the outer side of the metal sheath layer 6, so that the metal sheath can be effectively prevented from being corroded, specifically, the outer surface of the metal sheath 6 can be coated with flame-retardant asphalt or coated with halogen-free flame-retardant hot melt adhesive, the flame-retardant asphalt is added into the asphalt by utilizing a compound flame retardant in a certain process, so that the performance of the asphalt is changed, the flame-retardant asphalt is added with the flame-retardant characteristic in the air, and the anti-corrosion layer has the corrosion resistance and the flame-retardant characteristic. The halogen-free flame-retardant hot melt adhesive is an inorganic flame retardant, and halogen in the hot melt adhesive is removed, so that the hot melt adhesive does not generate halogen in the combustion process, and the metal sheath layer 6 has excellent corrosion resistance and excellent halogen-free performance. The anti-corrosion layer 7 in this embodiment is preferably a halogen-free flame retardant hot melt adhesive, so as to further improve the halogen-free performance of the low-smoke halogen-free high-voltage power cable 100 in this embodiment.
Specifically, both the inner and outer surfaces of the metal sheath layer 6 are smooth surfaces. In one embodiment, the metal sheath layer 6 is a lead sheath. In another embodiment, the metal sheath layer 6 is an aluminum sheath. In other embodiments, the metal sheath layer 6 is a composite sheath formed by copper wire shielding and metal plastic. The inside and outside surface of metal sheath layer 6 is smooth surface for metal sheath layer 6 can be laminated inseparabler with 5 layers of semiconductor buffer layer and anti-corrosion coating 7, in order to eliminate the air channel in 6 inboards of metal sheath layer and the outside, eliminate the back with the air channel in 6 inboards of metal sheath layer and the outside, make the inboard and the outside no air flow of metal sheath layer 6, thereby prevented that metal sheath layer 6 from being corroded under the effect of iron and oxygen. In addition, after eliminating the air passage in the inboard and outside of metal sheathing layer 6 for required oxygen in the combustion process is lacked in the inboard and the outside of metal sheathing layer 6, thereby prevents the utility model provides a no halogen high voltage power cable 100 is lighted in inside, has effectively improved the corrosion resistance and the anti flammability of metal sheathing layer 6. The metal sheath layer 6 in this embodiment is preferably an aluminium sheath.
In one embodiment, the fire barrier layer 9 is a ceramic silicone rubber layer. Keep off fire layer 9 and adopt the extrusion of ceramic silicon rubber to form, can reduce the injury of flame to the nonmetal restrictive coating 8 of keeping off fire layer 9 inboard, and, ceramic silicon rubber has no halogen, low cigarette characteristic, even keep off fire layer 9 by the ablation back, ceramic silicon rubber becomes hard casing, it separates the oxygen function to have thermal-insulated, come the inside nonmetal restrictive coating 8 of protection cable 100 not receive flame and high temperature damage, reach fire-resistant purpose, prevent nonmetal outer jacket layer 8 to warp, fire resistance through increasing the layer of keeping off fire, further protected to set up in the inboard nonmetal restrictive coating 8 of the layer of keeping off fire, and then increased the utility model provides a low smoke and zero halogen high voltage power cable 100's halogen-free performance.
Specifically, the thickness of the fire barrier layer 9 is 1mm to 2.5 mm. Thickness through setting up fire blocking layer 9 is between 1mm ~ 2.5mm, can guarantee that fire blocking layer 9 has sufficient fire behavior in, the manufacturing cost on fire blocking layer 9 can not be too high, has increased the economic performance of low smoke and zero halogen high voltage power cable 100 in this embodiment. Preferably, the thickness of the fire barrier layer 9 is 2mm, which not only facilitates the manufacture, but also plays an effective fire-proof role. In other embodiments, the thickness of the fire barrier layer 9 may also be 1.5mm, and the thickness is thinner, which can reduce the thickness of the whole cable 100 and simultaneously play an effective fire-proof role. The utility model discloses the thickness that keeps off fire layer 9 can set up according to actual need in a flexible way, the utility model discloses low smoke and zero halogen high voltage power cable 100 does not do the restriction to the thickness that keeps off fire layer 9.
The conductor shielding layer 2 comprises a first conductor shielding layer 220 and a second conductor shielding layer 221, the first conductor shielding layer 220 is formed by wrapping a semi-conductive tape, and the second conductor shielding layer 221 is formed by extruding a semi-conductive shielding material. The first conductor shielding layer 220 is wrapped and then the second conductor shielding layer 221 is extruded, so that the effect of homogenizing the magnetic field is mainly achieved.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (9)
1. The utility model provides a low smoke and zero halogen high voltage power cable, its characterized in that, low smoke and zero halogen high voltage power cable includes conductor, conductor shielding layer, insulating layer, insulation shielding layer, semiconductor buffer layer, metal sheath layer, anti-corrosion coating, non-metal sheath layer, fire blocking layer and the conducting layer that from interior to exterior set gradually, the conducting layer with non-metal sheath layer is the polyolefin layer.
2. The low smoke zero halogen high voltage power cable of claim 1, wherein said non-metallic sheath layer is a halogen-free low smoke polyolefin layer.
3. The low smoke zero halogen high voltage power cable of claim 1, wherein the conductive layer is a semiconductive halogen-free low smoke polyolefin layer.
4. The low smoke zero halogen high voltage power cable of claim 1, wherein the anti-corrosion layer is a flame retardant asphalt layer or a halogen free flame retardant hot melt adhesive layer.
5. The low smoke zero halogen high voltage power cable of claim 1, wherein the inner and outer surfaces of the metal sheath layer are smooth surfaces.
6. The low smoke zero halogen high voltage power cable of claim 5, wherein the metal sheath layer is a lead sheath; or the metal sheath layer is an aluminum sheath; or the metal sheath layer is a composite sheath formed by copper wire shielding and metal plastics.
7. A low smoke zero halogen high voltage power cable as claimed in any one of claims 1 to 6, characterized in that said fire barrier layer is a ceramic silicon rubber layer.
8. A low smoke zero halogen high voltage power cable as claimed in any one of claims 1 to 6, characterized in that the thickness of said fire barrier layer is 1mm to 2.5 mm.
9. A low smoke zero halogen high voltage power cable as claimed in any one of claims 1 to 6, characterized in that said conductor shielding layer comprises a first conductor shielding layer and a second conductor shielding layer, said first conductor shielding layer is formed by semi-conductive tape wrapping, said second conductor shielding layer is formed by semi-conductive shielding material extrusion wrapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221277974.0U CN217333708U (en) | 2022-05-25 | 2022-05-25 | Low-smoke halogen-free high-voltage power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221277974.0U CN217333708U (en) | 2022-05-25 | 2022-05-25 | Low-smoke halogen-free high-voltage power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217333708U true CN217333708U (en) | 2022-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221277974.0U Active CN217333708U (en) | 2022-05-25 | 2022-05-25 | Low-smoke halogen-free high-voltage power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217333708U (en) |
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2022
- 2022-05-25 CN CN202221277974.0U patent/CN217333708U/en active Active
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