CN214753013U - High-voltage flat aluminum-sheathed cable - Google Patents
High-voltage flat aluminum-sheathed cable Download PDFInfo
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- CN214753013U CN214753013U CN202120892161.1U CN202120892161U CN214753013U CN 214753013 U CN214753013 U CN 214753013U CN 202120892161 U CN202120892161 U CN 202120892161U CN 214753013 U CN214753013 U CN 214753013U
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Abstract
The utility model discloses a flat aluminium cover cable of high pressure relates to cable manufacturing technical field. The high-voltage flat aluminum-sheathed cable comprises an outer cable layer and an inner cable core, wherein the outer cable layer wraps the inner cable core; the cable inner core comprises a conductor, and a shielding lapping layer and a conductor shielding layer which are sequentially wrapped on the outer side of the conductor; the outer layer of the cable comprises an insulating layer, an insulating shielding layer, a buffer layer, a flat aluminum sheath, an outer sheath layer and an outer conducting layer which are sequentially wrapped on the outer side of the inner core of the cable; and adhesive glue is arranged between the flat aluminum sheath and the outer sheath layer. The utility model replaces the corrugated aluminum sheath with the flat aluminum sheath, and adopts the bonding glue to tightly bond the outer sheath and the flat aluminum sheath to form a whole, thereby protecting the flat aluminum sheath cable from wrinkling during bending; the buffer layer is arranged in the flat aluminum sheath, so that the buffer layer can support the flat aluminum sheath, and the flat aluminum sheath cable is further prevented from wrinkling during bending.
Description
Technical Field
The utility model relates to a cable manufacturing technical field, concretely relates to flat aluminium cover cable of high pressure.
Background
High pressure, superhigh pressure cable generally can set up one deck metal sheath, and it is used for the radial waterproof of cable, and the protection cable does not receive the moisture to influence, prevents insulating water tree's production, and as the electric capacity current channel and bear single-phase short-circuit fault current simultaneously to and provide the mechanical protection of certain intensity etc. for the cable. Aluminum is a common metal sheath.
At present, the aluminum sheath cable has two structural forms of a corrugated aluminum sleeve and a flat aluminum sleeve. However, with the rapid development of the power industry, certain areas have placed demands on the individual length of the high voltage cable. The corrugated aluminum sheath limits the length of the tray due to the large outer diameter; the corrugated aluminum sheath is replaced by the flat aluminum sheath, and the high-voltage flat aluminum sheath cable prepared by the flat aluminum sheath can reduce the outer diameter of the cable and increase the manufacturing length of the cable. Therefore, flat aluminum jackets are increasingly being used to prepare aluminum jackets for cables.
However, when the high-voltage flat aluminum sheathed cable is bent, the flat aluminum sheath is easy to wrinkle, which affects the processing and use of the cable. How to solve the technical problems is a technical problem to be solved in the technical field of cable manufacturing at present.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the embodiment of the utility model provides a high-pressure flat aluminium cover cable to solve the problem that proposes in the above-mentioned background art.
The utility model provides a following technical scheme: a high-voltage flat aluminum sleeve cable comprises an outer cable layer and an inner cable core, wherein the outer cable layer wraps the inner cable core; the cable inner core comprises a conductor, and a shielding lapping layer and a conductor shielding layer which are sequentially wrapped on the outer side of the conductor; the outer layer of the cable comprises an insulating layer, an insulating shielding layer, a buffer layer, a flat aluminum sheath, an outer sheath layer and an outer conducting layer which are sequentially wrapped on the outer side of the inner core of the cable; adhesive glue is arranged between the flat aluminum sheath and the outer sheath layer; the shielding wrapping layer is made of a semi-conductive nylon belt and a semi-conductive super-poly nylon belt, the semi-conductive nylon belt and the semi-conductive super-poly nylon belt cover the surface of the conductor in a wrapping mode, the semi-conductive nylon belt is an inner layer, and the semi-conductive super-poly nylon belt is an outer layer.
Preferably, the conductor is a copper conductor.
Preferably, the shielding wrapping layer is made of a semiconductive nylon belt and a semiconductive Teflon belt.
Preferably, the conductor shielding layer is made of an ultra-smooth semi-conductive cable shielding material.
Preferably, the insulating layer is made of an ultra-clean crosslinked polyethylene cable insulating material.
Preferably, the insulating shielding layer is made of an ultra-smooth semi-conductive cable shielding material.
Preferably, the buffer layer is made of a semiconductive water-blocking buffer belt and a semiconductive metal wire woven cloth belt composite layer.
Preferably, the outer sheath layer is made of insulation-grade polyethylene or polyvinyl chloride.
Preferably, the material of the outer conducting layer is polyethylene or polyvinyl chloride based semiconducting material.
Preferably, the adhesive glue is an EVA system or polyolefin-based adhesive material.
The embodiment of the utility model provides a pair of high-pressure flat aluminum sleeve cable has following beneficial effect:
1. the utility model replaces the corrugated aluminum sheath with the flat aluminum sheath, and adopts the bonding glue to tightly bond the outer sheath and the flat aluminum sheath to form a whole, thereby protecting the flat aluminum sheath cable from wrinkling during bending;
2. the buffer layer is arranged in the flat aluminum sheath, so that the buffer layer can support the flat aluminum sheath, and the flat aluminum sheath cable is further prevented from wrinkling during bending.
Drawings
Fig. 1 is the utility model discloses high-pressure flat aluminium cover cable structure schematic diagram.
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, the technical personnel in the field can obtain all other embodiments without creative work, which all belong to the protection scope of the present invention.
See fig. 1.
To the problem that above-mentioned background art mentioned, the embodiment of the utility model provides a high-pressure flat aluminium cover cable to solve above-mentioned technical problem, its technical scheme is as follows:
a high-voltage flat aluminum sleeve cable comprises an outer cable layer and an inner cable core, wherein the outer cable layer wraps the inner cable core; the cable inner core comprises a conductor 110, and a shielding wrapping layer and a conductor shielding layer 120 which are sequentially wrapped on the outer side of the conductor 110; the outer layer of the cable comprises an insulating layer 130, an insulating shielding layer 140, a buffer layer 150, a flat aluminum sheath 160, an outer sheath layer 170 and an outer conducting layer 180 which are sequentially wrapped on the outer side of the inner core of the cable; adhesive glue is arranged between the flat aluminum sheath 160 and the outer sheath layer 170; the shielding wrapping layer is made of a semi-conductive nylon tape and a semi-conductive super-poly nylon tape, the semi-conductive nylon tape and the semi-conductive super-poly nylon tape cover the surface of the conductor 110 in a wrapping mode, the semi-conductive nylon tape is an inner layer, and the semi-conductive super-poly nylon tape is an outer layer.
It should be noted that, through setting up the shielding around the covering that the material is semi-conductive nylon area and semi-conductive extra-many tangential belt, make conductor 110 outward appearance level and smooth through around the package, avoid conductor 110 surperficial prominent sharp-pointed burr to damage other structures of cable, two-layer strip is controlled according to taking the percentage of coverage 5% -15% around the package, takes the lid level and smooth.
The semiconductive Teflon tape has excellent mechanical strength, can protect the semiconductive nylon tape inside from being damaged, and can adapt to the influence of mechanical external force of a semi-finished product in the production and process transfer processes.
Preferably, the conductor 110 is a copper conductor.
Preferably, the conductor shielding layer 120 is made of a super-smooth semi-conductive cable shielding material. The combined surface of the ultra-smooth semi-conductive cable shielding material and the insulating layer 130 is tight, and the ultra-smooth semi-conductive cable shielding material has the function of homogenizing an electric field; meanwhile, by adopting the ultra-smooth semi-conductive cable shielding material, the size of the interface protrusion between the ultra-smooth semi-conductive cable shielding material and the insulating layer 130 can be effectively controlled to be not more than 80 μm, and the product quality is ensured.
In this embodiment, the conductor shielding layer 120, the insulating layer 130 and the insulating shielding layer 140 are prepared by a three-layer co-extrusion molding process implemented by a VCV vertical production line.
Preferably, the insulating layer 130 is made of an ultra-clean crosslinked polyethylene cable insulating material. The selected ultra-clean crosslinked polyethylene cable insulating material can effectively control the micropores in the insulating layer 130 structure to be not more than 50 microns and the size of the opaque impurities to be not more than 125 microns, and can meet the long-term working requirement of cable products.
Preferably, the insulating shielding layer 140 is made of a super-smooth semi-conductive cable shielding material. The ultra-smooth semi-conductive cable shielding material and the insulating layer 130 are tightly combined, and have the function of homogenizing an electric field. By adopting the ultra-smooth semi-conductive cable shielding material, the size of the interface protrusion between the ultra-smooth semi-conductive cable shielding material and the insulating layer 130 can be effectively controlled to be not more than 80 μm, and the product quality is ensured.
Preferably, the buffer layer 150 is a composite structure of a semiconductive water-blocking buffer tape and a semiconductive metal wire woven cloth tape. Semi-conductive buffer zone and semi-conductive wire strap of blocking water covers outside insulation shield 140 with wrapping the form, and the inlayer is semi-conductive buffer zone of blocking water, and the skin is semi-conductive wire strap, adopts linking or burden to take the lid form around the package, and outer wire weaves the strap and wraps the overlap joint gap that covers lower floor's semi-conductive buffer zone of blocking water to realize that whole outward appearance is level and smooth, the external diameter is even.
The adopted semi-conductive water-blocking buffer belt has good water swelling property, the semi-conductive metal wire woven cloth belt has good conductive property, and the composite structure formed by the two materials can improve the longitudinal water-blocking and electric properties of the product and improve the application reliability of the product.
Preferably, the outer sheath layer 170 is made of insulating polyethylene or polyvinyl chloride. The material selected for the sheath layer 170 can be selected according to the application environment of the product, wherein the polyethylene material has excellent insulating and mechanical strength and water erosion resistance, and the polyvinyl chloride has good modification property, so that the special use requirements of the product such as flame retardance, cold resistance and the like can be met.
Preferably, the material of the outer conductive layer 180 is polyethylene or polyvinyl chloride based semiconductor material. The material of the outer sheath 170 is selected according to the product. The layer structure can be used as a test electrode in a pressure test of the cable outer sheath 170.
Preferably, the adhesive glue is an EVA system or polyolefin-based adhesive material. The selection of the adhesive needs to consider the bonding effect, the compatibility with the sheath material and the processing performance of the production process; researches show that the adhesive can be well adhered with the flat aluminum sheath only by controlling the temperature of the adhesive in a proper temperature range, but the insulating wire core is damaged by overhigh temperature; through the verification of different bonding materials and the selection of a proper bonding adhesive and a corresponding processing technology, the flat aluminum sheath 160 and the outer sheath layer 170 are bonded very firmly, and meanwhile, the insulating wire core can be well protected from being damaged in the processing process.
The utility model relates to a flat aluminium cover cable of high pressure design principle as follows:
1. the flat aluminum sheath is easy to wrinkle when the high-voltage flat aluminum sheath cable is bent, so that in order to meet the bending performance of the high-voltage flat aluminum sheath cable, the outer diameters of the buffer layer 150 and the flat aluminum sheath 160 and the like need to be strictly controlled in the cable production process, the outer sheath layer 170 and the flat aluminum sheath 160 are firmly bonded together by adopting bonding glue, and the flat aluminum sheath is prevented from wrinkling when the cable is bent;
2. simultaneously, for guaranteeing the bending property of high-pressure flat aluminum jacket, insulating shield 140 and flat aluminum sheath 160 inner wall reserve the clearance about 0.7 ~ 1.0mm during process design, around package buffer layer 150 back (in this embodiment, for weaving the strap around package one deck semiconduction buffer tape that blocks water and one deck semiconduction wire), make it play the supporting role to flat aluminum sheath (in this embodiment, reduce flat aluminum sheath 160 external diameter through drawing die or roll undergauge equipment and make buffer layer 150 receive the compression after welding flat aluminum sheath 160, guarantee buffer layer 150 compactness and closely knit), when the cable is crooked, play certain supporting role, do not corrugate when further preventing flat aluminum sheath cable from crooked.
The embodiment of the utility model provides a pair of high-pressure flat aluminum sleeve cable has following beneficial effect: the utility model replaces the corrugated aluminum sheath with the flat aluminum sheath, and adopts the bonding glue to tightly bond the outer sheath and the flat aluminum sheath to form a whole, thereby protecting the flat aluminum sheath cable from wrinkling during bending; the buffer layer is arranged in the flat aluminum sheath, so that the buffer layer can support the flat aluminum sheath, and the flat aluminum sheath cable is further prevented from wrinkling during bending.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
It should be understood that equivalent alterations and modifications can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept, and all such alterations and modifications shall fall within the scope of the appended claims.
Claims (9)
1. A high-voltage flat aluminum sleeve cable comprises an outer cable layer and an inner cable core, wherein the outer cable layer wraps the inner cable core; the cable inner core is characterized by comprising a conductor (110), and a shielding wrapping layer and a conductor shielding layer (120) which are sequentially wrapped on the outer side of the conductor (110); the outer layer of the cable comprises an insulating layer (130), an insulating shielding layer (140), a buffer layer (150), a flat aluminum sheath (160), an outer sheath layer (170) and an outer conducting layer (180) which are sequentially wrapped on the outer side of the inner core of the cable; adhesive glue is arranged between the flat aluminum sheath (160) and the outer sheath layer (170); the shielding wrapping layer is made of a semi-conductive nylon tape and a semi-conductive super-poly nylon tape, the semi-conductive nylon tape and the semi-conductive super-poly nylon tape cover the surface of the conductor (110) in a wrapping mode, the semi-conductive nylon tape is an inner layer, and the semi-conductive super-poly nylon tape is an outer layer.
2. A high voltage flat aluminium sheath cable according to claim 1, characterized in that the conductor (110) is a copper conductor.
3. The high-voltage flat aluminum-sheathed cable according to claim 1, wherein the conductor shielding layer (120) is made of ultra-smooth semi-conductive cable shielding material.
4. The high-voltage flat aluminum-sheathed cable according to claim 1, wherein the insulating layer (130) is made of an ultra-clean crosslinked polyethylene cable insulating material.
5. The high-voltage flat aluminum-sheathed cable according to claim 1, wherein the insulation shielding layer (140) is made of ultra-smooth semi-conductive cable shielding material.
6. The high-voltage flat aluminum-sheathed cable according to claim 1, wherein the buffer layer (150) is made of a semiconductive water-blocking buffer tape and a semiconductive metal wire tape composite layer.
7. The high-voltage flat aluminum-sheathed cable according to claim 1, wherein the outer sheath layer (170) is made of insulation-grade polyethylene or polyvinyl chloride.
8. The high-voltage flat aluminum-sheathed cable according to claim 1, wherein the outer conductive layer (180) is made of polyethylene or polyvinyl chloride-based semiconductive material.
9. The high-voltage flat aluminum-sheathed cable according to claim 1, wherein the adhesive glue is an EVA system or polyolefin-based adhesive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120892161.1U CN214753013U (en) | 2021-04-28 | 2021-04-28 | High-voltage flat aluminum-sheathed cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120892161.1U CN214753013U (en) | 2021-04-28 | 2021-04-28 | High-voltage flat aluminum-sheathed cable |
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| Publication Number | Publication Date |
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| CN214753013U true CN214753013U (en) | 2021-11-16 |
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| CN202120892161.1U Active CN214753013U (en) | 2021-04-28 | 2021-04-28 | High-voltage flat aluminum-sheathed cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117095856A (en) * | 2023-03-15 | 2023-11-21 | 特变电工山东鲁能泰山电缆有限公司 | High-voltage cable preparation method, production line and high-voltage cable |
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2021
- 2021-04-28 CN CN202120892161.1U patent/CN214753013U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117095856A (en) * | 2023-03-15 | 2023-11-21 | 特变电工山东鲁能泰山电缆有限公司 | High-voltage cable preparation method, production line and high-voltage cable |
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