CN216817895U - Copper core polyethylene insulation flame-retardant cable for smart power grid - Google Patents
Copper core polyethylene insulation flame-retardant cable for smart power grid Download PDFInfo
- Publication number
- CN216817895U CN216817895U CN202220367979.6U CN202220367979U CN216817895U CN 216817895 U CN216817895 U CN 216817895U CN 202220367979 U CN202220367979 U CN 202220367979U CN 216817895 U CN216817895 U CN 216817895U
- Authority
- CN
- China
- Prior art keywords
- cable core
- cable
- core
- flame
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model provides a copper-core polyethylene insulation flame-retardant cable for a smart power grid, relates to the technical field of power cables, and solves the problems that a cable core of the existing polyethylene insulation cable is easily extruded and damaged and the cable core is easily slid and pulled too much; a layer of polyethylene insulating layer is arranged between the main supporting cylinders and inside the main supporting cylinders; four cable core supporting cylinders are fixedly arranged in the main supporting cylinder; a cable core protection layer is embedded and mounted inside each cable core supporting cylinder, and a cable core is arranged inside each cable core protection layer; the outer sides of the main supporting cylinder and the polyethylene insulating layer are wrapped with a flame-retardant layer. The supporting cylinder in the cable can effectively improve the whole anti-deformation capacity of the cable, so that the extrusion caused to the cable core can be reduced, the possibility that the cable core is damaged due to extrusion is reduced, meanwhile, the cable core is not easy to be broken due to overlarge dragging inside the cable core supporting cylinder, and the flame-retardant layer is very stable in use.
Description
Technical Field
The utility model belongs to the technical field of power cables, and particularly relates to a copper-core polyethylene insulated flame-retardant cable for a smart power grid.
Background
The current carrying capacity of the cable is generally related to the sectional area of a conductor wire core, when the current is increased, the temperature of the conductor is increased, and when the temperature of an insulating layer coated outside the conductor exceeds an upper limit, the performance of the insulating layer is changed, so that the insulation reliability of the insulating layer is greatly reduced, the service life of the cable is influenced, and some polyethylene insulated cables are produced.
Based on the above, the present inventors found that the following problems exist: the existing polyethylene insulated cables are only wrapped by rubber materials, so that the whole deformation resistance is poor, the polyethylene insulated cables are easy to deform due to extrusion, cable cores are easy to damage, and the cable cores of the cables are easy to slide in a cable wrapping layer, so that the cables are easy to tear excessively and break.
Therefore, in view of the above, research and improvement are performed on the existing structure and defects, and a copper-core polyethylene insulated flame-retardant cable for a smart grid is provided, so as to achieve the purpose of higher practical value.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides a copper-core polyethylene insulation flame-retardant cable for a smart grid, which aims to solve the problems that a cable core of an existing polyethylene insulation cable is easily damaged by extrusion, and the cable core is easily slid and pulled too much.
The purpose and the effect of the copper-core polyethylene insulated flame-retardant cable for the smart power grid are achieved by the following specific technical means:
a copper core polyethylene insulation flame-retardant cable for a smart power grid comprises a main supporting cylinder; a layer of polyethylene insulating layer is arranged between the main supporting cylinders and inside the main supporting cylinders; four cable core supporting cylinders are fixedly arranged in the main supporting cylinder; a cable core protection layer is embedded in each cable core supporting cylinder, and a cable core is arranged in each cable core protection layer; the outer sides of the main supporting cylinder and the polyethylene insulating layer are wrapped with a flame retardant layer; the outer side of the flame-retardant layer is wrapped with an outer protective layer.
Furthermore, a plurality of semicircular grooves corresponding to the semicircular block-shaped bulges in the cable core supporting cylinder are formed in the outer side of the cable core protective layer.
Furthermore, both sides all are provided with an annular arch about the outside of a main supporting cylinder, and still are provided with six horizontal strip archs between two annular archs.
Furthermore, the parts of the polyethylene insulating layers positioned in the main supporting cylinders are wrapped on the outer sides of the cable core supporting cylinders, and the parts of the polyethylene insulating layers positioned between the adjacent main supporting cylinders are directly wrapped on the outer sides of the cable core protective layers.
Furthermore, the flame-retardant layer is made of polyvinyl chloride rubber, and grooves corresponding to the annular protrusions and the strip-shaped protrusions outside the main support cylinder are formed in the inner wall of the flame-retardant layer.
Furthermore, the cable core supporting cylinder is internally provided with a plurality of semicircular block-shaped bulges which are annularly arranged and equidistantly arranged.
Compared with the prior art, the utility model has the following beneficial effects:
the main supporting cylinder wraps the polyethylene insulating layer, the cable core protecting layer and the cable core inside, and can play a main supporting and protecting role during use, so that the deformation degree of the cable during extrusion can be reduced, the cable core protecting layer and the cable core can be protected by the cable core supporting cylinder, the cable core can be limited by the cable core supporting cylinder to slide inside, cable core pulling is reduced, compared with the existing polyethylene insulating cable, the supporting cylinder in the cable can effectively improve the overall deformation resistance of the cable, extrusion on the cable core can be reduced, the possibility that the cable core is damaged due to extrusion is reduced, meanwhile, the cable core is not easy to be pulled too large inside the cable core supporting cylinder to break, and the flame retardant layer is very stable to use.
Drawings
FIG. 1 is a schematic axial view of the flame retardant layer and the outer protective layer of the present invention with the outer protective layer cut away.
Fig. 2 is a schematic axial side view of the present invention.
FIG. 3 is a schematic axial view of the flame retardant layer of the present invention.
FIG. 4 is a schematic axial side view of the main support cylinder of the present invention.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
1. a main support cylinder; 2. a polyethylene insulating layer; 3. a cable core support cylinder; 4. a cable core protective layer; 5. a cable core; 6. a flame retardant layer; 7. and an outer protective layer.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Example (b):
as shown in figures 1 to 4:
the utility model provides a copper-core polyethylene insulated flame-retardant cable for a smart power grid, which comprises a main supporting cylinder 1; a polyethylene insulating layer 2 is arranged between the main supporting cylinders 1 and in the main supporting cylinders; the left side and the right side of the outer part of the main supporting cylinder 1 are respectively provided with an annular bulge, six transverse strip-shaped bulges are further arranged between the two annular bulges, the annular groove in the inner wall of the flame-retardant layer 6 is embedded with the annular bulges in the outer part of the main supporting cylinder 1 so as to prevent the flame-retardant layer 6 from sliding left and right on the outer side of the main supporting cylinder 1, and the strip-shaped groove in the inner wall of the flame-retardant layer 6 is embedded with the strip-shaped bulges in the outer part of the main supporting cylinder 1 so as to prevent the flame-retardant layer 6 from rotating on the outer side of the main supporting cylinder 1; four cable core supporting cylinders 3 are fixedly arranged in the main supporting cylinder 1;
a cable core protection layer 4 is embedded and installed in each cable core support cylinder 3, and a cable core 5 is arranged in each cable core protection layer 4; the outer side of the cable core protective layer 4 is provided with a plurality of semicircular grooves corresponding to the semicircular block-shaped bulges inside the cable core supporting barrel 3, when the cable core protective layer 4 and the cable core 5 are used, the cable core protective layer 4 and the cable core 5 are inserted into the cable core supporting barrel 3 for fixing, and at the moment, the semicircular block-shaped bulges inside the cable core supporting barrel 3 can be tightly embedded with the semicircular grooves outside the cable core protective layer 4, so that the cable core protective layer 4 is not easy to slide relative to the cable core supporting barrel 3, and direct pulling on the cable core 5 can be reduced; the outer sides of the main supporting cylinder 1 and the polyethylene insulating layer 2 are wrapped with a flame retardant layer 6; the outer side of the flame-retardant layer 6 is wrapped with an outer protective layer 7.
Wherein, the part that the polyethylene insulating layer 2 is located 1 inside of main supporting cylinder all wraps up in the cable core supports a 3 outsides, and the part that the polyethylene insulating layer 2 is located between the adjacent main supporting cylinder 1 directly wraps up in the 4 outsides of cable core inoxidizing coating, consequently can be with the whole parcels in inboard of cable core inoxidizing coating 4 and cable core 5, and then play better insulating effect.
Wherein, fire-retardant layer 6 is made by polyvinyl chloride rubber, and be provided with on the inner wall of fire-retardant layer 6 and support a 1 outside annular protrusion and the protruding recess that corresponds of strip with the main, polyvinyl chloride rubber can play fine fire prevention flame retardant efficiency when meeting with the conflagration, and annular groove on the 6 inner walls of fire-retardant layer and the protruding gomphosis of main tributary support a 1 outside annular can avoid fire-retardant layer 6 to prop a 1 outside horizontal slip in the main tributary support a 1 outside, the strip recess on the 6 inner walls of fire-retardant layer and the protruding gomphosis of main tributary support a 1 outside strip can avoid fire-retardant layer 6 to prop a 1 outside rotation in the main tributary support a 1.
Wherein, the inside of a cable core support section of thick bamboo 3 all is the annular and arranges the equidistance and be provided with a plurality of semi-circular cubic archs, penetrates cable core inoxidizing coating 4 and cable core 5 in a cable core support section of thick bamboo 3 and fixes during the use, and the semi-circular cubic arch of the inside of a cable core support section of thick bamboo 3 this moment can closely gomphosis with the semi-circular recess in the 4 outsides of cable core inoxidizing coating, therefore cable core inoxidizing coating 4 just is difficult to slide for a cable core support section of thick bamboo 3, just so can reduce the direct pulling that causes cable core 5.
The specific use mode and function of the embodiment are as follows:
according to the utility model, when the cable is manufactured, the cable core 5 is firstly penetrated into the cable core protective layer 4, then the cable core protective layer 4 and the cable core 5 are penetrated into the cable core supporting cylinder 3 for fixing, at the moment, the semicircular blocky bulges in the cable core supporting cylinder 3 can be tightly embedded with the semicircular grooves outside the cable core protective layer 4, then the cable core protective layer 4 and the cable core 5 are placed into the mold, the polyethylene insulating layer 2 is poured, part of the polyethylene insulating layer 2 can be penetrated into the main supporting cylinder 1 to wrap the cable core supporting cylinder 3 during pouring, the other part of the polyethylene insulating layer 2 can directly wrap the cable core protective layer 4, therefore, the cable core protective layer 4 and the cable core 5 can be completely wrapped at the inner side, a better insulating effect is further achieved, then the flame retardant layer 6 is wrapped at the outer sides of the main supporting cylinder 1 and the polyethylene insulating layer 2, at the moment, the annular grooves on the inner wall of the flame retardant layer 6 can be embedded with the annular bulges outside the main supporting cylinder 1 to avoid the flame retardant layer 6 from being left outside the main supporting cylinder 1 Slide on the right side, the protruding gomphosis of bar recess and the main tributary on the 6 inner walls of fire-retardant layer can avoid fire-retardant layer 6 rotatory in the main tributary props a 1 outside, consequently fire-retardant layer 6 also can be very firm, at last with outer inoxidizing coating 7 parcel in the 6 outsides of fire-retardant layer can.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (6)
1. The utility model provides a fire-retardant cable for smart power grids of copper core polyethylene insulation which characterized in that: the polyethylene insulated cable includes: a main support cylinder (1); a polyethylene insulating layer (2) is arranged between the main supporting cylinders (1) and inside the main supporting cylinders; four cable core supporting cylinders (3) are fixedly arranged in the main supporting cylinder (1); a cable core protection layer (4) is embedded and installed in each cable core supporting cylinder (3), and a cable core (5) is arranged in each cable core protection layer (4); the outer sides of the main supporting cylinder (1) and the polyethylene insulating layer (2) are wrapped with a flame-retardant layer (6); the outer side of the flame-retardant layer (6) is wrapped with an outer protective layer (7).
2. The copper-core polyethylene insulated flame-retardant cable for the smart grid according to claim 1, wherein: the cable core supporting structure is characterized in that the parts, located inside the main supporting cylinders (1), of the polyethylene insulating layers (2) are wrapped outside the cable core supporting cylinders (3), and the parts, located between the adjacent main supporting cylinders (1), of the polyethylene insulating layers (2) are directly wrapped outside the cable core protective layers (4).
3. The copper-core polyethylene insulated flame-retardant cable for smart power grids as claimed in claim 1, characterized in that: the cable core supporting cylinder (3) is internally provided with a plurality of semicircular block-shaped bulges which are annularly arranged at equal intervals.
4. The copper-core polyethylene insulated flame-retardant cable for smart power grids as claimed in claim 1, characterized in that: the outer side of the cable core protective layer (4) is provided with a plurality of semicircular grooves corresponding to the semicircular block-shaped bulges in the cable core supporting cylinder (3).
5. The copper-core polyethylene insulated flame-retardant cable for the smart grid according to claim 1, wherein: the outside left and right sides of a main supporting cylinder (1) all is provided with an annular arch, and still is provided with six horizontal strip archs between two annular archs.
6. The copper-core polyethylene insulated flame-retardant cable for the smart grid according to claim 1, wherein: the flame-retardant layer (6) is made of polyvinyl chloride rubber, and grooves corresponding to the external annular bulges and the strip-shaped bulges of the main support cylinder (1) are formed in the inner wall of the flame-retardant layer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220367979.6U CN216817895U (en) | 2022-02-23 | 2022-02-23 | Copper core polyethylene insulation flame-retardant cable for smart power grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220367979.6U CN216817895U (en) | 2022-02-23 | 2022-02-23 | Copper core polyethylene insulation flame-retardant cable for smart power grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216817895U true CN216817895U (en) | 2022-06-24 |
Family
ID=82041477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220367979.6U Active CN216817895U (en) | 2022-02-23 | 2022-02-23 | Copper core polyethylene insulation flame-retardant cable for smart power grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216817895U (en) |
-
2022
- 2022-02-23 CN CN202220367979.6U patent/CN216817895U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210156131U (en) | Novel insulated cable | |
| CN216817895U (en) | Copper core polyethylene insulation flame-retardant cable for smart power grid | |
| AU2020334655B2 (en) | Cable | |
| CN210142528U (en) | Cable with a protective layer | |
| CN215577815U (en) | Polyethylene insulated flame-retardant polyvinyl chloride sheath shielding instrument cable | |
| CN211294681U (en) | Novel braided shielding steel tape armored environment-friendly control cable | |
| CN212782824U (en) | Mineral substance fireproof cable | |
| CN210039747U (en) | Copper strip laminated conductor extruded insulation power cable for low-voltage distribution and electric device | |
| CN210606729U (en) | Cable for power transmission | |
| CN210295943U (en) | Cable insulation flame-retardant system | |
| CN201336168Y (en) | Power cable for providing power supply for communication equipment | |
| CN219017304U (en) | Water-blocking crosslinked polyethylene sheath power cable | |
| CN217640712U (en) | Composite insulation waterproof wire and cable | |
| CN216647916U (en) | High temperature resistant flexible fireproof cable | |
| CN220691753U (en) | Direct current cable for photovoltaic system | |
| CN216528142U (en) | Overhead power cable with steel core | |
| CN219610073U (en) | Double-sheath flame-retardant local area network cable | |
| CN213752012U (en) | Large-length mineral insulated cable | |
| CN214152547U (en) | Novel dampproofing power cable blocks water | |
| CN211670017U (en) | Fluoroplastic insulating silicon rubber sheath high-temperature-resistant control cable | |
| CN220796316U (en) | Multi-core wire and cable | |
| CN211957193U (en) | Anti-interference type audio and video cable of nai buckling | |
| CN217008772U (en) | Low-voltage aluminum alloy non-magnetic stainless steel armored power cable | |
| CN221805136U (en) | Fireproof cable | |
| CN215895998U (en) | Withstand voltage thermal-insulated type thermocouple compensation cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |