CN215183141U - Medium-voltage lap joint coiled cable for electric power rush-repair - Google Patents
Medium-voltage lap joint coiled cable for electric power rush-repair Download PDFInfo
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- CN215183141U CN215183141U CN202121366181.1U CN202121366181U CN215183141U CN 215183141 U CN215183141 U CN 215183141U CN 202121366181 U CN202121366181 U CN 202121366181U CN 215183141 U CN215183141 U CN 215183141U
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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
Abstract
The utility model discloses a cable is coiled with middling pressure overlap joint to electrical power rush-repair relates to cable technical field, include: a conductor, the conductor being a flexible conductor; the ethylene propylene rubber conductor shielding layer is arranged in a manner of clinging to the conductor in the circumferential direction; an insulating layer disposed at a radially outer position with respect to the ethylene propylene rubber conductor shield layer; an insulating shield layer disposed in a radially outer position relative to the insulating layer; a metallic shield layer disposed in a radially outer position relative to the dielectric shield layer; the tightening layer is arranged outside the metal shielding layer and is used for tightening the metal shielding layer; an outer jacket layer disposed in a radially outer position relative to the tie-down layer. The utility model discloses a conductor selection is soft conductor, makes the utility model discloses a cable possesses good resistant bending property for the cable can adapt to the work characteristics of repeated rolling, and the convenience is laid wire fast in electrical power rush-repair.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to cable is coiled with middling pressure overlap joint to electrical power rush-repair.
Background
When a circuit fails or is periodically overhauled, a power station is usually powered on temporarily by a standby line in order to avoid economic loss and the like caused by temporary power failure. The emergency repair or overhaul work is carried out when the power is cut off locally at a fault point or an overhaul point, and the temporarily used standby cable needs to have the electrical performance required by the conventional cable and also needs to have the requirements of repeated use, coil collection, convenience in transportation and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a cable is coiled with middling pressure overlap joint to electrical power rush-repair can fine satisfy the demand that interim construction wiring, repeated coiling put the cable.
The utility model discloses electrical power rush-repair is with middling pressure overlap joint coiled cable, include: a conductor, the conductor being a flexible conductor; the ethylene propylene rubber conductor shielding layer is arranged in a manner of clinging to the conductor in the circumferential direction; an insulating layer disposed at a radially outer position with respect to the ethylene propylene rubber conductor shield layer; an insulating shield layer disposed in a radially outer position relative to the insulating layer; a metallic shield layer disposed in a radially outer position relative to the dielectric shield layer; the tightening layer is arranged outside the metal shielding layer and is used for tightening the metal shielding layer; an outer jacket layer disposed in a radially outer position relative to the tie-down layer.
Further, the conductor is a category 6 conductor.
Further, the insulating layer is an ethylene propylene rubber insulating layer.
Furthermore, the insulation shielding layer is an ethylene propylene rubber insulation shielding layer.
Furthermore, the ethylene propylene rubber conductor shielding layer, the ethylene propylene rubber insulating layer and the ethylene propylene rubber insulating shielding layer are formed by one-time extrusion molding.
Further, the metal shielding layer comprises a copper wire, and the copper wire is wrapped outside the insulating shielding layer.
Furthermore, the tightening layer is reversely wrapped on the outer side of the metal shielding layer, and the tightening layer is used for tightening the metal shielding layer.
Further, the outer sheath layer is made of soft rubber.
The utility model discloses electrical power rush-repair is with middling pressure overlap joint coiled cable has following beneficial effect at least: the conductor of the utility model is selected as a soft conductor, so that the medium-voltage lapping coiled cable for power line repair has good bending resistance, the cable can adapt to the working characteristics of repeated rolling, and the rapid wiring in the power line repair is convenient; the ethylene propylene rubber conductor shielding layer is soft, can be well compatible with the insulating layer, homogenizes the conductor electric field and effectively avoids partial discharge caused by the conductor and the insulating layer.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention will be further described with reference to the following drawings and examples, in which:
fig. 1 is a schematic cross-sectional view of a medium-voltage lap-jointed coiled cable for power line repair according to an embodiment of the present invention.
Reference numerals:
the cable comprises a conductor 11, an ethylene propylene rubber conductor shielding layer 12, an insulating layer 13, an insulating shielding layer 14, a metal shielding layer 15, a fastening layer 16 and an outer sheath layer 17.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does 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.
In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The existing medium-voltage cable basically adopts 2 types of compressed conductors, and the conductors are hard; the insulation is made of XLPE (cross-linked polyethylene) material and copper tape shielding, and the sheath is made of PVC (polyvinyl chloride) or PE (polyethylene) material. The medium-voltage cable has no performances of wear resistance, oil resistance, acid and alkali resistance and the like, is not suitable for repeated winding, and is not suitable for being used in a severe special environment.
Referring to fig. 1, the utility model discloses electrical power rush-repair is with middling pressure overlap coiled cable, including conductor 11, EP rubbers conductor shielding layer 12, insulating layer 13, metallic shield 15, tighten layer 16 and oversheath layer 17.
Specifically, the conductor 11 is a flexible conductor; the ethylene propylene rubber conductor shielding layer 12 is arranged in a manner of clinging to the conductor 11 in the circumferential direction; the insulating layer 13 is arranged in a radially outer position with respect to the ethylene propylene rubber conductor shield layer 12; the insulating shield layer 14 is arranged in a radially outer position with respect to the insulating layer 13; the metallic shield layer 15 is arranged in a radially outer position with respect to the insulating shield layer 14; the tightening layer 16 is arranged outside the metal shielding layer 15, and the tightening layer 16 is used for tightening the metal shielding layer 15; the outer jacket layer 17 is arranged in a radially outer position with respect to the tie-up layer 16. The conductor 11 of the utility model is selected as a soft conductor, so that the cable of the utility model has good bending resistance, the cable can adapt to the working characteristics of repeated rolling, and the rapid wiring in the electric power rush-repair is convenient; the ethylene propylene rubber conductor shielding layer 12 is soft and can be well compatible with the insulating layer 13, the electric field of the conductor 11 is uniform, and the air gap discharge is favorably reduced.
In one possible embodiment, the conductor 11 is a category 6 conductor. The 6-type conductor is relatively soft, has good bending resistance, can be well adapted to the working characteristics of repeated winding in emergency repair work, and is convenient and rapid in wiring.
In one possible embodiment, the insulating layer 13 is an ethylene propylene rubber insulating layer, and the ethylene propylene rubber insulating layer is extruded outside the ethylene propylene rubber conductor shielding layer 12. The ethylene propylene rubber has good insulating property, and can effectively ensure the high-voltage resistance of the cable; and the ethylene propylene rubber is water tree resistant, so that the service life and the safety performance of the cable can be greatly improved.
In one possible embodiment, the insulation shield layer 14 is an ethylene propylene rubber insulation shield layer. The ethylene propylene rubber insulation shielding layer is extruded on the outer layer of the insulation layer 13, so that an electric field can be effectively uniform, and interference can be effectively shielded by combining the outer metal shielding layer 15.
In a possible implementation mode, the ethylene propylene rubber conductor shielding layer 12, the ethylene propylene rubber insulating layer 13 and the ethylene propylene rubber insulating shielding layer are extruded and molded at one time in a three-layer co-extrusion mode. The ethylene propylene rubber conductor shielding layer 12, the ethylene propylene rubber insulating layer 13 and the ethylene propylene rubber metal shielding layer 15 are extruded and molded at one time through a three-layer co-extrusion process, and then extrusion of the cable is monitored by matching with online diameter and deviation measuring equipment, so that the adverse conditions of eccentricity, ellipse and the like of the cable in the production process are avoided, and the cable is ensured to have excellent electrical performance.
In one possible embodiment, the metallic shielding layer 15 comprises copper wire wrapped around the insulating shielding layer. The metal shielding layer 15 in combination with the insulating shielding layer can effectively shield interference. In this embodiment, metal shielding layer 15 adopts thin copper wire to wind around wrapping outside the insulation shielding layer, because thin copper wire has good compliance, can closely laminate with the insulation shielding layer, can improve the ability of shielding interference, ensures the shielding effect.
In one possible embodiment, the tightening layer 16 is wrapped around the outer side of the metal shielding layer 15 in a reverse direction, and the tightening layer 16 is used for tightening the metal shielding layer 15. The tightening layer 16 tightens the metal shielding layer 15, so that the problems of lantern-shaped bulges and the like caused by the arching of the metal shielding layer 15 when the cable is bent are effectively prevented, and the stability of the electrical performance is guaranteed.
In one possible embodiment, the outer sheath layer 17 is a soft rubber material. The soft rubber material has good environment resistance, such as oil resistance, acid and alkali resistance, friction resistance and the like. The soft rubber is selected as the material of the outer sheath layer 17, so that the cable has the characteristics of wear resistance, oil resistance, acid and alkali resistance, bending resistance, flexibility and the like, and is suitable for application scenes such as repeated dragging on the ground, take-up and pay-off and the like.
A medium voltage lap-wound cable for electrical power rush-repair according to an embodiment of the present invention will be described in detail with reference to fig. 1 as a specific example.
Referring to fig. 1, the medium-voltage lapped and coiled cable for power line repair comprises a conductor 11, an ethylene propylene rubber conductor shielding layer 12, an ethylene propylene rubber insulating layer, an ethylene propylene rubber insulating shielding layer, a metal shielding layer 15, a copper strip fastening layer 16 and an outer sheath layer 17 which are sequentially arranged from inside to outside. The conductor 11 is a 6-class soft conductor and has the characteristic of softness; the ethylene propylene rubber conductor shielding layer 12, the ethylene propylene rubber insulating layer and the ethylene propylene rubber insulating shielding layer are extruded and molded at one time by adopting a three-layer co-extrusion process, and are matched with online diameter and deflection measuring equipment, so that the coaxiality of the cable is ensured, and the adverse conditions of eccentricity, ellipse and the like of a cable outlet are avoided, so that the excellent electrical performance of the cable is ensured; the outer sheath layer 17 is made of soft rubber, so that the cable can be used in severe environments such as oil seepage, acid and alkali properties and the like, and has good wear resistance; because the conductor 11 is 6 types of conductors for the cable is whole comparatively soft, can well satisfy special operation requirements such as interim construction wiring, repeated coiling receive and releases line.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
Claims (8)
1. A medium voltage lap-wound cable for electrical power rush-repair, comprising:
a conductor, the conductor being a flexible conductor;
the ethylene propylene rubber conductor shielding layer is arranged in a manner of clinging to the conductor in the circumferential direction;
an insulating layer disposed at a radially outer position with respect to the ethylene propylene rubber conductor shield layer;
an insulating shield layer disposed in a radially outer position relative to the insulating layer;
a metallic shield layer disposed in a radially outer position relative to the dielectric shield layer;
the tightening layer is arranged outside the metal shielding layer and is used for tightening the metal shielding layer; and
an outer jacket layer disposed in a radially outer position relative to the tie-up layer.
2. The medium voltage lap coiled cable for electrical power rush repair of claim 1, wherein the conductor is a category 6 conductor.
3. The medium voltage lap-wound cable for electrical power rush-repair of claim 1, wherein said insulating layer is an ethylene propylene rubber insulating layer.
4. The medium voltage lap-wound cable for electrical power rush-repair of claim 3, wherein said insulating and shielding layer is an ethylene propylene rubber insulating and shielding layer.
5. The medium-voltage lap-jointed coiled cable for electric power rush-repair according to claim 4, wherein the ethylene-propylene rubber conductor shielding layer, the ethylene-propylene rubber insulating layer and the ethylene-propylene rubber insulating shielding layer are formed by one-time extrusion molding.
6. The medium voltage lap-wound cable for electrical power rush-repair of claim 1, wherein the metallic shielding layer comprises copper wires wrapped around the outside of the insulating shielding layer.
7. The medium voltage lap-jointed coiled cable for electrical power rush-repair of claim 6, wherein the tightening layer is reversely wrapped outside the metallic shielding layer, and the tightening layer is used for tightening the metallic shielding layer.
8. The medium voltage lap-wound cable for electrical power rush-repair of claim 7, wherein said outer jacket layer is of a soft rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121366181.1U CN215183141U (en) | 2021-06-17 | 2021-06-17 | Medium-voltage lap joint coiled cable for electric power rush-repair |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121366181.1U CN215183141U (en) | 2021-06-17 | 2021-06-17 | Medium-voltage lap joint coiled cable for electric power rush-repair |
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| CN215183141U true CN215183141U (en) | 2021-12-14 |
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| CN202121366181.1U Active CN215183141U (en) | 2021-06-17 | 2021-06-17 | Medium-voltage lap joint coiled cable for electric power rush-repair |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115547552A (en) * | 2022-09-26 | 2022-12-30 | 广州南洋电缆集团有限公司 | Flat medium-voltage reel cable and manufacturing method thereof |
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2021
- 2021-06-17 CN CN202121366181.1U patent/CN215183141U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115547552A (en) * | 2022-09-26 | 2022-12-30 | 广州南洋电缆集团有限公司 | Flat medium-voltage reel cable and manufacturing method thereof |
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