CN211879100U - Fire-resistant power cable of crosslinked polyethylene - Google Patents
Fire-resistant power cable of crosslinked polyethylene Download PDFInfo
- Publication number
- CN211879100U CN211879100U CN202020946168.2U CN202020946168U CN211879100U CN 211879100 U CN211879100 U CN 211879100U CN 202020946168 U CN202020946168 U CN 202020946168U CN 211879100 U CN211879100 U CN 211879100U
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- Prior art keywords
- layer
- fire
- retardant
- power cable
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- 229920003020 cross-linked polyethylene Polymers 0.000 title claims abstract description 44
- 239000004703 cross-linked polyethylene Substances 0.000 title claims abstract description 44
- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 20
- 239000003063 flame retardant Substances 0.000 claims abstract description 58
- 238000005253 cladding Methods 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 14
- 229920000098 polyolefin Polymers 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004020 conductor Substances 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 105
- 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 claims description 23
- 238000009941 weaving Methods 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 239000011247 coating layer Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 229910052736 halogen Inorganic materials 0.000 abstract description 3
- 150000002367 halogens Chemical class 0.000 abstract description 3
- 238000009421 internal insulation Methods 0.000 abstract description 3
- 238000012856 packing Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 230000005484 gravity Effects 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
- 239000011241 protective layer Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 description 1
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Classifications
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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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- Insulated Conductors (AREA)
Abstract
The utility model discloses a fire-resistant power cable of crosslinked polyethylene, including the crosslinked polyethylene insulating layer, the cladding of crosslinked polyethylene insulating layer is at the surface of copper core conductor, the crosslinked polyethylene insulating layer is provided with four, four the outside cladding of crosslinked polyethylene insulating layer has the shielding layer, the inside of shielding layer is provided with the intussuseption, the surface cladding of shielding layer has the waterproof layer, the surface cladding of waterproof layer has fire-retardant layer, fire-retardant layer contains fire-retardant surrounding layer, neck ring and does not have the fire-retardant polyolefin material of halogen, the inside of neck ring is provided with the enhancement steel wire, the surface cladding of fire-retardant layer has the wearing layer. The utility model discloses in, establish insulating layer, shielding layer, waterproof layer and fire-retardant layer, realize that power cable's internal insulation, outside shielding, waterproof and fire behaviour strengthen, fire-retardant layer includes fire-retardant outer jacket and does not have the fire-retardant polyolefin stopping of halogen, realizes increasing power cable's surperficial fire-retardant intensity, guarantees power cable's fire behaviour.
Description
Technical Field
The utility model relates to a power cable field especially relates to a fire-resistant power cable of crosslinked polyethylene.
Background
The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater. In the power lines, the cable is increasing in specific gravity. Power cables are cable products used in the trunk lines of power systems to transmit and distribute high power electrical energy, including various voltage classes, 1-500KV and above, and various insulated power cables.
General power cable line body structure sets up singlely, and the external protection only can provide surperficial insulating ability, does not possess corresponding fire-resistant flame retardant ability that excels in, and the flame retardant ability of self can be realized to partial cable, and the waterproof layer setting is in fire-retardant layer outside, and the waterproof layer receives to burn the waterproof ability that the damage can influence the later stage, and the structure setting utilization ratio is little, and the structure of own can't satisfy the function of dealing with multiple emergency.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a crosslinked polyethylene fireproof power cable.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a fire-resistant power cable of crosslinked polyethylene, includes the crosslinked polyethylene insulating layer, the crosslinked polyethylene insulating layer cladding is at the surface of copper core conductor, the crosslinked polyethylene insulating layer is provided with four, four the outside cladding of crosslinked polyethylene insulating layer has the shielding layer, the inside of shielding layer is provided with the intussuseption, the surface cladding of shielding layer has the waterproof layer, the surface cladding of waterproof layer has fire-retardant layer, fire-retardant layer contains fire-retardant surrounding layer, interior grommet and the fire-retardant polyolefin material of halogen-free, the inside of interior grommet is provided with the enhancement steel wire, the surface cladding of fire-retardant layer has the wearing layer.
As a further description of the above technical solution:
a gap is formed between the shielding layer and the crosslinked polyethylene insulating layer in an attaching mode, the inner filler is correspondingly arranged inside the gap between the shielding layer and the crosslinked polyethylene insulating layer, and the inner filler is made of glass fibers.
As a further description of the above technical solution:
the shielding layer is formed by horizontal vertical weaving of tin-plated copper, and is adjacent the inside tin-plated copper's of shielding layer weaving angle sets up to ninety degrees, the shielding layer cross section sets up to the disc.
As a further description of the above technical solution:
the waterproof layer has elasticity itself, and the waterproof layer laminating parcel is at the surface of shielding layer.
As a further description of the above technical solution:
the inner surface and the outer surface of the ring body of the inner lining ring are fixedly connected with eight convex plates, the number of the convex plates is eight along the circumference of the inner surface and the outer surface of the ring body of the inner lining ring at equal intervals, gaps are formed among the inner side and the outer side of the inner lining ring through the convex plates, the waterproof layer and the flame-retardant outer cladding layer, the halogen-free flame-retardant polyolefin material is correspondingly filled in the gaps, and eight reinforcing steel wires are arranged in the positions, corresponding to the convex plates, in the inner part of the inner lining.
As a further description of the above technical solution:
the flame-retardant outer cladding layer is fixedly arranged to be a halogen-free low-smoke polyolefin sleeve.
As a further description of the above technical solution:
the wear-resistant layer is made of polyurethane materials.
The utility model discloses following beneficial effect has:
1. the utility model discloses among the fire-resistant power cable structure of crosslinked polyethylene, set up insulating layer, shielding layer, waterproof layer and fire-retardant layer, realize that power cable's internal insulation, outside shielding, waterproof and flame retardant property are strengthened, and fire-retardant layer includes fire-retardant outer jacket and does not have the fire-retardant polyolefin stopping of halogen, realizes increasing power cable's surperficial fire-retardant intensity, guarantees power cable's flame retardant property.
2. The utility model discloses among the fire-resistant power cable structure of crosslinked polyethylene, the waterproof layer setting is inboard at fire-retardant layer, even the outside burns out and also can not influence power cable's waterproof performance, and the line body structure is inside to be put with the enhancement steel wire, increases power cable's tensile strength.
Drawings
FIG. 1 is a schematic cross-sectional view of a fire-resistant power cable made of cross-linked polyethylene;
FIG. 2 is a schematic cross-sectional view of a cross-linked polyethylene fire-resistant power cable;
fig. 3 is a structural view of an inner liner ring of a fire-resistant power cable of cross-linked polyethylene.
Illustration of the drawings:
1. a copper-core conductor; 2. a crosslinked polyethylene insulating layer; 3. filling in; 4. a shielding layer; 5. a waterproof layer; 6. a flame retardant layer; 7. a wear layer; 8. a flame retardant outer wrap; 9. an inner liner ring; 10. a halogen-free flame retardant polyolefin material; 11. a convex plate; 12. and reinforcing the steel wire.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, the present invention provides an embodiment: a fire-resistant power cable of crosslinked polyethylene, including crosslinked polyethylene insulating layer 2, the comprehensive properties such as mechanical property, environmental stress cracking resistance, chemical resistance to corrosion, creep resistance and electrical property of PE of the surface protective layer of the copper core conductor 1 are obviously improved, and the temperature-resistant grade is obviously improved, the crosslinked polyethylene insulating layer 2 is coated on the surface of the copper core conductor 1, realize the direct protection to the copper core conductor 1, the crosslinked polyethylene insulating layer 2 is provided with four, the outside of four crosslinked polyethylene insulating layers 2 is coated with shielding layer 4, realize the anti-interference operation, the inside of the shielding layer 4 is provided with inner packing 3, realize the solidification packing inside, make the internal structure stable, the outer surface of the shielding layer 4 is coated with waterproof layer 5, provide the waterproof operation of the line body, the outer surface of the waterproof layer 5 is coated with flame-retardant layer 6, provide the flame retardant property, flame-retardant layer 6 includes fire-retardant surrounding layer 8, interior grommet 9 and does not have steamed fire-retardant polyolefin material 10, increases the fire-retardant operation of three-layer, and the inside of interior grommet 9 is provided with reinforcing steel wire 12, increases cable tensile ability, and the surface cladding of flame-retardant layer 6 has wearing layer 7, increases the wear resistance on surface.
A gap is arranged between the shielding layer 4 and the crosslinked polyethylene insulating layer 2, the inner filler 3 is correspondingly arranged inside the gap between the shielding layer 4 and the crosslinked polyethylene insulating layer 2, the material of the inner filler 3 is glass fiber, the internal flame-retardant filling operation is realized, the shielding layer 4 is formed by transversely and vertically weaving tinned copper, the weaving angle of the tinned copper inside the adjacent shielding layer 4 is set to be ninety degrees, so that the weaving is firm, the cross section of the shielding layer 4 is set to be a circular surface, the stable structure is ensured, the waterproof layer 5 has elasticity and is prevented from being damaged by tension, the waterproof layer 5 is attached and wrapped on the outer surface of the shielding layer 4, the inner surface and the outer surface of the ring body of the inner lining ring 9 are fixedly connected with the convex plates 11 to provide inner and outer supports, so as to provide a filling space, the eight convex plates 11 are equidistantly arranged along the circumference of the inner surface and the outer surface of the ring body of the inner lining ring 9, halogen-free flame-retardant polyolefin material 10 corresponds fills in the inside in space, realizes increasing to the flame-retardant protection of three-layer, and it is provided with eight in the inside position that corresponds flange 11 of inside collar 9 to strengthen steel wire 12, guarantees the tensile strength of cable, and the fixed low smoke polyolefin sleeve pipe that sets up to halogen-free of fire-retardant surrounding layer 8 provides the fire-retardant operation of first layer, and the fixed setting of material of wearing layer 7 is the polyurethane material, guarantees the wear resistance on surface.
The working principle is as follows: in the fire-resistant power cable structure of crosslinked polyethylene, set up crosslinked polyethylene insulating layer 2, shielding layer 4, waterproof layer 5 and fire-retardant layer 6, realize power cable's internal insulation, external shielding, waterproof and fire behaviour strengthens, fire-retardant layer 6 includes fire-retardant outer jacket 8 and fills with halogen-free fire-retardant polyolefin material 10, the realization increases power cable's surperficial fire-retardant intensity, guarantee power cable's fire-retardant performance, waterproof layer 5 sets up at fire-retardant layer 6 inboardly, even the outside burns out can not influence power cable's waterproof performance yet, line body structure is inside to be put with and to strengthen steel wire 12, power cable's tensile strength is increased.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (7)
1. A fire-resistant power cable of cross-linked polyethylene comprising an insulating layer (2) of cross-linked polyethylene, characterized in that: the copper-core conductor is characterized in that the cross-linked polyethylene insulating layer (2) is coated on the outer surface of the copper-core conductor (1), the cross-linked polyethylene insulating layer (2) is provided with four or four shielding layers (4) coated on the outer side of the cross-linked polyethylene insulating layer (2), inner filling (3) is arranged inside the shielding layers (4), a waterproof layer (5) is coated on the outer surface of the shielding layers (4), a flame-retardant layer (6) is coated on the outer surface of the waterproof layer (5), the flame-retardant layer (6) comprises a flame-retardant outer coating layer (8), an inner lining ring (9) and a halogen-free flame-retardant polyolefin material (10), a reinforcing steel wire (12) is arranged inside the inner lining ring (9), and a wear-resistant layer (7).
2. A fire-resistant power cable of cross-linked polyethylene according to claim 1, characterized in that: a gap is formed between the shielding layer (4) and the crosslinked polyethylene insulating layer (2) in an attaching mode, the inner filler (3) is correspondingly arranged inside the gap between the shielding layer (4) and the crosslinked polyethylene insulating layer (2), and the inner filler (3) is made of glass fibers.
3. A fire-resistant power cable of cross-linked polyethylene according to claim 1, characterized in that: the shielding layer (4) is formed by horizontal vertical weaving of tinned copper, and is adjacent the inside tinned copper's of shielding layer (4) weaving angle sets up to ninety degrees, shielding layer (4) cross section sets up to the disc.
4. A fire-resistant power cable of cross-linked polyethylene according to claim 1, characterized in that: waterproof layer (5) itself has the elasticity, and waterproof layer (5) laminating parcel is at the surface of shielding layer (4).
5. A fire-resistant power cable of cross-linked polyethylene according to claim 1, characterized in that: the inner surface and the outer surface of the ring body of the inner lining ring (9) are fixedly connected with eight convex plates (11), the eight convex plates (11) are arranged at equal intervals along the circumference of the inner surface and the outer surface of the ring body of the inner lining ring (9), gaps are formed between the inner side and the outer side of the inner lining ring (9) through the convex plates (11) and the waterproof layer (5) and the flame-retardant outer cladding layer (8), the halogen-free flame-retardant polyolefin material (10) is correspondingly filled in the gaps, and eight reinforcing steel wires (12) are arranged in the positions, corresponding to the convex plates (11), of the inner lining ring (9).
6. A fire-resistant power cable of cross-linked polyethylene according to claim 1, characterized in that: the flame-retardant outer cladding layer (8) is fixedly arranged to be a halogen-free low-smoke polyolefin sleeve.
7. A fire-resistant power cable of cross-linked polyethylene according to claim 1, characterized in that: the wear-resistant layer (7) is made of polyurethane materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020946168.2U CN211879100U (en) | 2020-05-29 | 2020-05-29 | Fire-resistant power cable of crosslinked polyethylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020946168.2U CN211879100U (en) | 2020-05-29 | 2020-05-29 | Fire-resistant power cable of crosslinked polyethylene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211879100U true CN211879100U (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020946168.2U Expired - Fee Related CN211879100U (en) | 2020-05-29 | 2020-05-29 | Fire-resistant power cable of crosslinked polyethylene |
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| Country | Link |
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| CN (1) | CN211879100U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112635116A (en) * | 2020-11-19 | 2021-04-09 | 马鞍山安慧智电子科技有限公司 | Irradiation crosslinking polyolefin insulation photovoltaic cable |
| CN113674908A (en) * | 2021-08-24 | 2021-11-19 | 江苏亨通线缆科技有限公司 | Flame-retardant and fire-resistant power cable resistant to spray vibration |
-
2020
- 2020-05-29 CN CN202020946168.2U patent/CN211879100U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112635116A (en) * | 2020-11-19 | 2021-04-09 | 马鞍山安慧智电子科技有限公司 | Irradiation crosslinking polyolefin insulation photovoltaic cable |
| CN113674908A (en) * | 2021-08-24 | 2021-11-19 | 江苏亨通线缆科技有限公司 | Flame-retardant and fire-resistant power cable resistant to spray vibration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201106 |