CN217008736U - Cross-linked polyethylene insulated cold-resistant power cable - Google Patents
Cross-linked polyethylene insulated cold-resistant power cable Download PDFInfo
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- CN217008736U CN217008736U CN202220884362.1U CN202220884362U CN217008736U CN 217008736 U CN217008736 U CN 217008736U CN 202220884362 U CN202220884362 U CN 202220884362U CN 217008736 U CN217008736 U CN 217008736U
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Abstract
The utility model belongs to the technical field of power cables, and particularly relates to a crosslinked polyethylene insulated cold-resistant power cable which comprises a cable core, an inner sheath, an anticorrosive layer, an insulating layer, a shielding layer, a first anti-freezing layer, a waterproof layer, a fireproof layer, a crosslinked polyethylene insulating layer and a second anti-freezing layer, wherein the inner sheath is wrapped outside the cable core, the anticorrosive layer is wrapped outside the inner sheath, and the insulating layer is wrapped outside the anticorrosive layer, so that the crosslinked polyethylene insulated cold-resistant power cable has the beneficial effects that: through setting up evenly distributed's solid fixed ring to can make a plurality of fixed rod evenly distributed, thereby the fixed rod can carry out fine reinforcement and difficult bending to the cable, consequently is frozen and the cable that becomes fragile is difficult for the rupture when rocking, improves the life of cable, through setting up anticorrosive coating, waterproof layer, flame retardant coating and freeze proof layer, has improved the corrosion behavior, waterproof performance, fire behavior and the freeze proof ability of cable effectively.
Description
Technical Field
The utility model relates to the technical field of power cables, in particular to a crosslinked polyethylene insulated cold-resistant power cable.
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 transmission lines under river-crossing seawater; in the power lines, the cable is increasing in specific gravity. The power cable is a cable product used for transmitting and distributing high-power electric energy in a main line of a power system, and comprises various voltage grades of 1-500KV and above and various insulated power cables; it can be classified into medium and low voltage power cables (35 kv and below), high voltage cables (110 kv and above), ultra high voltage cables (275-800 kv) and extra high voltage cables (1000 kv and above) according to voltage class. Further, the electric current system may be divided into an ac cable and a dc cable.
The existing power cable is poor in freezing resistance, the cable is frozen to cause brittleness in a low-temperature environment, the brittle cable is easy to break due to shaking in a strong wind environment, and the cable is frequently required to be maintained.
SUMMERY OF THE UTILITY MODEL
The utility model is provided in view of the problems of the prior cross-linked polyethylene insulated cold-resistant power cable.
Therefore, the utility model aims to provide a crosslinked polyethylene insulated cold-resistant power cable, which solves the problems that the existing power cable has poor freezing resistance, the cable is fragile due to freezing in a low-temperature environment, the fragile cable is very easy to break due to shaking in a strong wind environment, and the cable is frequently required to be maintained.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions:
a cross-linked polyethylene insulated cold-resistant power cable comprises a cable core, an inner sheath, an anti-corrosion layer, an insulating layer, a shielding layer, a first anti-freezing layer, a waterproof layer, a fireproof layer, a cross-linked polyethylene insulating layer and a second anti-freezing layer, the outer side of the cable core is wrapped with the inner sheath, the outer side of the inner sheath is wrapped with the anticorrosive layer, the outer side of the anti-corrosion layer is wrapped with the insulating layer, the outer side of the insulating layer is wrapped with the shielding layer, the first anti-freezing layer is wrapped on the outer side of the shielding layer, the waterproof layer is wrapped on the outer side of the first anti-freezing layer, the fireproof layer is wrapped outside the waterproof layer, the crosslinked polyethylene insulating layer is wrapped outside the fireproof layer, be equipped with the clearance chamber between flame retardant coating and the crosslinked polyethylene insulating layer, the equidistance is equipped with solid fixed ring in the clearance chamber, and is a plurality of gu fixed ring connects through the fixed rod.
As a preferable scheme of the crosslinked polyethylene insulated cold-resistant power cable of the present invention, wherein: the fixed ring is sleeved on the fireproof layer, and the inner diameter of the fixed ring is equal to the outer diameter of the fireproof layer.
As a preferable scheme of the crosslinked polyethylene insulated cold-resistant power cable of the present invention, wherein: the fixing ring is provided with through holes at equal intervals, and the fixing rod penetrates through the through holes.
As a preferable scheme of the crosslinked polyethylene insulated cold-resistant power cable of the present invention, wherein: the aperture of the through hole is equal to the diameter of the fixing rod, and the outer diameter of the fixing ring is equal to the inner diameter of the crosslinked polyethylene insulating layer.
As a preferable scheme of the crosslinked polyethylene insulated cold-resistant power cable of the present invention, wherein: the fireproof layer is formed by spraying non-expansive fireproof paint, and the waterproof layer is formed by spraying acrylic acid waterproof paint.
As a preferable scheme of the crosslinked polyethylene insulated cold-resistant power cable of the present invention, wherein: the first anti-freezing layer is formed by spraying anti-freezing paint, and the shielding layer is a metal mesh made of red copper.
As a preferable scheme of the crosslinked polyethylene insulated cold-resistant power cable of the present invention, wherein: the insulating layer sets up to insulated paper, the anticorrosive coating is formed by anticorrosive paint spraying.
As a preferable scheme of the crosslinked polyethylene insulated cold-resistant power cable of the present invention, wherein: the inner sheath, the fixing ring and the fixing rod are made of rubber materials.
As a preferable scheme of the crosslinked polyethylene insulated cold-resistant power cable, the utility model comprises: the anti-freezing coating is characterized by further comprising a second anti-freezing layer, wherein the second anti-freezing layer is wrapped on the cross-linked polyethylene insulating layer and is formed by spraying anti-freezing coating.
Compared with the prior art:
1. the fixing rings are uniformly distributed, so that the fixing rods are uniformly distributed, the fixing rods can well reinforce the cable and cannot be bent easily, the frozen and brittle cable cannot be broken easily during shaking, and the service life of the cable is prolonged;
2. by arranging the anticorrosive layer, the waterproof layer, the fireproof layer and the anti-freezing layer, the anticorrosive performance, the waterproof performance, the fireproof performance and the anti-freezing performance of the cable are effectively improved.
Drawings
Fig. 1 is a schematic structural diagram provided in embodiment 1 of the present invention;
fig. 2 is a cross-sectional view of a power cable provided in embodiment 1 of the present invention;
FIG. 3 is a schematic structural view of a retaining ring according to the present invention;
fig. 4 is a schematic structural diagram provided in embodiment 2 of the present invention.
In the figure: the cable comprises a cable core 1, an inner sheath 2, an anticorrosive coating 3, an insulating layer 4, a shielding layer 5, a first anti-freezing layer 6, a waterproof layer 7, a fireproof layer 8, a crosslinked polyethylene insulating layer 9, a fixing ring 10, a through hole 101, a fixing rod 11 and a second anti-freezing layer 12.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Example 1:
the utility model provides a cross-linked polyethylene insulated cold-resistant power cable, please refer to fig. 1-3, comprising a cable core 1, an inner sheath 2, an anti-corrosion layer 3, an insulating layer 4 and a shielding layer 5, first anti-freeze layer 6, waterproof layer 7, flame retardant coating 8, crosslinked polyethylene insulating layer 9 and second anti-freeze layer 12, 1 outside parcel of cable core has inner sheath 2, 2 outside parcels of inner sheath have anticorrosive coating 3, 3 outside parcels of anticorrosive coating have insulating layer 4, 4 outside parcels of insulating layer have shielding layer 5, 5 outside parcels of shielding layer have first anti-freeze layer 6, 6 outside parcels of first anti-freeze layer have waterproof layer 7, 7 outside parcels of waterproof layer have flame retardant coating 8, 8 outside parcels of flame retardant coating have crosslinked polyethylene insulating layer 9, be equipped with interstitial cavity 89 between flame retardant coating 8 and the crosslinked polyethylene insulating layer 9, the equidistance is equipped with solid fixed ring 10 in the interstitial cavity 89, a plurality of solid fixed ring 10 connect through fixed rod 11.
The fixed ring 10 is sleeved on the fireproof layer 8, and the inner diameter of the fixed ring 10 is equal to the outer diameter of the fireproof layer 8.
Through-hole 101 has been seted up to the equidistance on the solid fixed ring 10, gu fixed ring 10's effect is spacing to fixed rod 11 to make a plurality of fixed rods 11 evenly distributed, thereby evenly distributed's fixed rod 11 is consolidated the cable is whole, and fixed rod 11 passes through-hole 101.
The aperture of the through hole 101 is equal to the diameter of the fixing rod 11, so that the fixing ring 10 is not easy to move, the fixing ring 10 is uniformly distributed, the outer diameter of the fixing ring 10 is equal to the inner diameter of the crosslinked polyethylene insulating layer 9, and the crosslinked polyethylene insulating layer 9 tightly sleeves the fixing ring 10.
The fireproof layer 8 is formed by spraying non-expansive fireproof paint to enhance the fireproof performance of the cable, and the waterproof layer 7 is formed by spraying acrylic waterproof paint to enhance the waterproof performance of the cable.
The first anti-freezing layer 6 is formed by spraying anti-freezing coating, and the shielding layer 5 is a metal mesh made of red copper, so that the cable has good shielding performance.
Insulating layer 4 sets up to insulated paper, makes the cable possess insulating properties, and anticorrosive coating 3 is formed by the spraying of anticorrosive paint, the anticorrosive ability of reinforcing cable.
The inner sheath 2, the fixing ring 10 and the fixing rod 11 are made of rubber.
When the cable is used specifically, the fixing rings 10 are uniformly distributed, so that the fixing rods 11 are uniformly distributed, the fixing rods 11 integrally reinforce the cable, when the cable is fragile due to freezing, the cable is not easy to bend due to the reinforcement of the fixing rods 11, and the fragile cable is not easy to break; meanwhile, due to the existence of the first anti-freezing layer 6 formed by spraying the anti-freezing coating, the anti-freezing performance of the cable is enhanced; due to the existence of the anticorrosive coating 3 formed by spraying the anticorrosive paint, the cable has good anticorrosive effect; due to the existence of the waterproof layer 7 formed by spraying the waterproof coating, the waterproof effect of the cable is good, and the service life of the cable in use in an environment with much rainwater is prolonged; due to the fire-proof layer 8 formed by spraying the waterproof coating, the fire-proof performance of the cable is improved.
Example 2:
referring to fig. 4, the difference from embodiment 1 is: the anti-freezing coating further comprises a second anti-freezing layer 12, the second anti-freezing layer 12 is wrapped on the cross-linked polyethylene insulating layer 9, and the second anti-freezing layer 12 is formed by spraying anti-freezing coating.
When the cable is used specifically, the fixing rings 10 are uniformly distributed, so that the fixing rods 11 are uniformly distributed, the fixing rods 11 integrally reinforce the cable, when the cable is fragile due to freezing, the cable is not easy to bend due to the reinforcement of the fixing rods 11, and the fragile cable is not easy to break; meanwhile, due to the existence of the first anti-freezing layer 6 and the second anti-freezing layer 12 which are formed by spraying the anti-freezing coating, the anti-freezing performance of the cable is enhanced; due to the existence of the anticorrosive coating 3 formed by spraying the anticorrosive paint, the cable has good anticorrosive effect; due to the existence of the waterproof layer 7 formed by spraying the waterproof coating, the waterproof effect of the cable is good, and the service life of the cable in use in an environment with much rainwater is prolonged; due to the fire-proof layer 8 formed by spraying the waterproof coating, the fire-proof performance of the cable is improved.
While the utility model has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the various features of the disclosed embodiments of this invention can be used in any combination as long as there is no structural conflict, and the combination is not exhaustively described in this specification merely for the sake of brevity and resource savings. Therefore, it is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. The utility model provides an insulating cold-resistant power cable of crosslinked polyethylene, includes cable core (1), inner sheath (2), anticorrosive coating (3), insulating layer (4), shielding layer (5), first anti-freezing layer (6), waterproof layer (7), flame retardant coating (8), crosslinked polyethylene insulating layer (9) and second anti-freezing layer (12), its characterized in that: the outer side of the cable core (1) is wrapped with the inner sheath (2), the outer side of the inner sheath (2) is wrapped with the anticorrosive layer (3), the insulating layer (4) is wrapped outside the anti-corrosion layer (3), the shielding layer (5) is wrapped outside the insulating layer (4), the first anti-freezing layer (6) is wrapped on the outer side of the shielding layer (5), the waterproof layer (7) is wrapped on the outer side of the first anti-freezing layer (6), the fireproof layer (8) is wrapped on the outer side of the waterproof layer (7), the crosslinked polyethylene insulating layer (9) is wrapped on the outer side of the fireproof layer (8), a clearance cavity (89) is arranged between the fire-proof layer (8) and the cross-linked polyethylene insulating layer (9), the clearance cavity (89) is internally provided with fixing rings (10) at equal intervals, and the fixing rings (10) are connected through fixing rods (11).
2. The cross-linked polyethylene insulated cold-resistant power cable according to claim 1, wherein the fixing ring (10) is sleeved on the fire-proof layer (8), and the inner diameter of the fixing ring (10) is equal to the outer diameter of the fire-proof layer (8).
3. The cross-linked polyethylene insulated cold-resistant power cable as claimed in claim 1, wherein the fixing ring (10) is provided with through holes (101) at equal intervals, and the fixing rod (11) passes through the through holes (101).
4. The cross-linked polyethylene insulated cold-resistant power cable according to claim 3, wherein the aperture of the through hole (101) is equal to the diameter of the fixing rod (11), and the outer diameter of the fixing ring (10) is equal to the inner diameter of the cross-linked polyethylene insulating layer (9).
5. The cross-linked polyethylene insulated cold-resistant power cable according to claim 1, wherein the fire-proof layer (8) is sprayed with a non-intumescent fire-proof coating, and the water-proof layer (7) is sprayed with an acrylic acid water-proof coating.
6. The cross-linked polyethylene insulated cold-resistant power cable according to claim 1, wherein the first anti-freezing layer (6) is formed by spraying anti-freezing paint, and the shielding layer (5) is a metal mesh made of red copper.
7. The cross-linked polyethylene insulated cold-resistant power cable as claimed in claim 1, wherein the insulating layer (4) is made of insulating paper, and the anticorrosive layer (3) is formed by spraying anticorrosive paint.
8. The cross-linked polyethylene insulated cold-resistant power cable according to claim 1, wherein the inner sheath (2), the fixing ring (10) and the fixing rod (11) are made of rubber.
9. The cross-linked polyethylene insulated cold-resistant power cable according to claim 1, further comprising a second anti-freezing layer (12), wherein the second anti-freezing layer (12) is wrapped on the cross-linked polyethylene insulating layer (9), and the second anti-freezing layer (12) is formed by spraying an anti-freezing coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220884362.1U CN217008736U (en) | 2022-04-18 | 2022-04-18 | Cross-linked polyethylene insulated cold-resistant power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220884362.1U CN217008736U (en) | 2022-04-18 | 2022-04-18 | Cross-linked polyethylene insulated cold-resistant power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217008736U true CN217008736U (en) | 2022-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220884362.1U Active CN217008736U (en) | 2022-04-18 | 2022-04-18 | Cross-linked polyethylene insulated cold-resistant power cable |
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| Country | Link |
|---|---|
| CN (1) | CN217008736U (en) |
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- 2022-04-18 CN CN202220884362.1U patent/CN217008736U/en active Active
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