CN204760119U - Tensile, resistance to compression middling pressure power cable that blocks water - Google Patents
Tensile, resistance to compression middling pressure power cable that blocks water Download PDFInfo
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- CN204760119U CN204760119U CN201520500021.XU CN201520500021U CN204760119U CN 204760119 U CN204760119 U CN 204760119U CN 201520500021 U CN201520500021 U CN 201520500021U CN 204760119 U CN204760119 U CN 204760119U
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Abstract
The utility model discloses a tensile, resistance to compression middling pressure power cable that blocks water, including 3 single -phase electrically conductive units, this single -phase electrically conductive unit is from interior outside in proper order for including circular copper conductor and cladding in first semiconductive shielding layer, insulating layer, the second semiconductive shielding layer of circular copper conductor surface in proper order, and a copper strips forms iron shielded layer around the package in second semiconductive shielding layer surface, and a non -woven fabrics is around package in iron shielded layer surface, a composite aluminium -plastic tape indulge wrap in the non -woven fabrics surface, a polyethylene layer cladding in composite aluminium -plastic tape surface, double -deck CPP area around the package in 3 the single -phase electrically conductive unit surface of root, there are polyvinyl chloride inner sheath layer, polyvinyl chloride oversheath layer in this double -deck CPP outband surface cladding in proper order, the polypropylene gasket for packing has 4 at least bellyings at its surface along interval distribution such as circumference. The utility model is suitable for a power transmission of 35kV and following circuit can use in humid environment, has the good footpath function that blocks water mutually, and this product can stop inside moisture gets into the cable, and protection insulation core is dry.
Description
Technical field
The utility model relates to a kind of medium-pressure power cable, particularly relates to a kind of tension, resistance to compression blocks water medium-pressure power cable.
Background technology
Cable is divided into low-voltage cable, midium voltage cable, high-tension cable, extra-high-tension cable and extra-high-tension cable according to electric pressure, and midium voltage cable refers to and can bear the cable that voltage is less than 35 kilovolts.Existing midium voltage cable does not generally have water stop function; even if there is water stop function also only can block water in radial direction or axially; for independent radial water-resisting cable; external protection is after being subject to external force damage; water can enter cable along breakage; and permeate along the axis extension of cable, until cable joint place, cause electric cable accessories to puncture. alwaysAnd independent axial water repellent electric cable, only can prevent moisture longitudinal extension infiltration in the cable, but can not overcome the infiltration of radial moisture, when having moisture in the cable, cable life can reduce greatly, easily occurs line fault.
In addition, common midium voltage cable adopts the cushion effect formed during steel-tape armouring less, and extraneous impulsive force easily causes damage to the cable core of cable inside, makes the mechanical performance of midium voltage cable poor.
Summary of the invention
The utility model provides a kind of tension, resistance to compression blocks water medium-pressure power cable; this medium-pressure power cable that blocks water is applicable to 35kV and with the electric power transfer of line; wet environment can be used in; there is good footpath phase water stop function; this product can stop moisture to enter cable inside; protection insulated wire cores is dry, thus extends the useful life of cable.
For achieving the above object, the technical solution adopted in the utility model is: a kind of tension, resistance to compression blocks water medium-pressure power cable, comprise 3 single-phase conductive units, this single-phase conductive unit is from inside to outside followed successively by the first semiconductive shielding layer comprising circular copper conductors and be coated on circular copper conductors outer surface successively, insulating barrier, second semiconductive shielding layer, one copper strips is wrapped forms metal screen layer in the second semiconductive shielding layer outer surface, one nonwoven fabrics is wrapped in metal screen layer outer surface, one aluminum plastic composite belt longitudinal is wrapped in described nonwoven fabrics outer surface, one polyethylene layer is coated on aluminium-plastic tape outer surface,
Pair of lamina CPP is with wrapped in described 3 single-phase conductive unit outer surfaces, this double-deck CPP is with outer surface to be coated with polyvinyl chloride inner sheath layer successively, polyvinyl chloride external sheath layer, described polyvinyl chloride inner sheath layer, steel-tape armouring layer is provided with between polyvinyl chloride external sheath layer, between described double-deck CPP band and 3 single-phase conductive units, there is some root polypropylene gasket for packings, described double-deck CPP is with Duplication to control 20 ~ 30%, described 3 stranded lay ratios of single-phase conductive unit control at 25 ~ 30 times, described polypropylene gasket for packing to be circumferentially spacedly distributed at least 4 lug bosses at its outer surface.
The technical scheme improved further in technique scheme is as follows:
1., in such scheme, the thickness of described aluminium-plastic tape is 0.2 ~ 0.4mm.
2., in such scheme, described polyethylene layer thickness is 1.2 ~ 1.8mm.
3. in such scheme, described steel-tape armouring layer is made up of internal layer steel band and outer layer steel belt, and the gap of internal layer steel band is covered near middle position by outer layer steel belt, and its clearance rate is not more than 50% of steel band bandwidth.
4., in such scheme, the number of the lug boss of described polypropylene gasket for packing outer surface is 5.
Because technique scheme is used, the utility model compared with prior art has following advantages:
The utility model tension, resistance to compression block water medium-pressure power cable, it is applicable to 35kV and with the electric power transfer of line, wet environment can be used in, there is good footpath phase water stop function, this product can stop moisture to enter cable inside, protection insulated wire cores is dry, thus extends the useful life of cable; Adopt the box-like stop water of the vertical cladding of phase-splitting, every phase core has waterproof construction separately, this novel product is laid in underground wet environment, entering of moisture content can be blocked completely, effectively improve product waterproof property, greatly improve cable running safety coefficient, improve the useful life of cabling under severe conditions, ensure that cabling can normally work in water; Secondly, has some root polypropylene gasket for packings between its double-deck CPP band with 3 single-phase conductive units, polypropylene gasket for packing to be circumferentially spacedly distributed at least 4 lug bosses at its outer surface, has dispersion and cushions the effect of extraneous stress, its better mechanical property.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model tension, resistance to compression blocks water medium-pressure power cable structural representation.
In above accompanying drawing: 1, single-phase conductive unit; 2, circular copper conductors; 3, the first semiconductive shielding layer; 4, insulating barrier; 5, the second semiconductive shielding layer; 6, metal screen layer; 61, copper strips; 7, nonwoven fabrics; 8, aluminium-plastic tape; 9, double-deck CPP band; 10, polyvinyl chloride inner sheath layer; 11, polyvinyl chloride external sheath layer; 12, steel-tape armouring layer; 121, internal layer steel band; 122, outer layer steel belt; 13, polypropylene gasket for packing; 14, polyethylene layer; 15, lug boss.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment 1: a kind of tension, resistance to compression block water medium-pressure power cable, comprise 3 single-phase conductive units 1, this single-phase conductive unit 1 is from inside to outside followed successively by the first semiconductive shielding layer 3, insulating barrier 4, second semiconductive shielding layer 5 that comprise circular copper conductors 2 and be coated on circular copper conductors 2 outer surface successively, one copper strips 61 is wrapped forms metal screen layer 6 in the second semiconductive shielding layer 5 outer surface, one nonwoven fabrics 7 is wrapped in metal screen layer 6 outer surface, one aluminium-plastic tape 8 is vertical is wrapped in described nonwoven fabrics 7 outer surface, and a polyethylene layer 14 is coated on aluminium-plastic tape 8 outer surface;
Pair of lamina CPP is with 9 wrapped in described 3 single-phase conductive unit 1 outer surfaces, this double-deck CPP is with 9 outer surfaces to be coated with polyvinyl chloride inner sheath layer 10 successively, polyvinyl chloride external sheath layer 11, described polyvinyl chloride inner sheath layer 10, steel-tape armouring layer 12 is provided with between polyvinyl chloride external sheath layer 11, described double-deck CPP is with between 9 and 3 single-phase conductive units 1 has some root polypropylene gasket for packings 13, described double-deck CPP is with 9 Duplication to control 20 ~ 30%, described 3 stranded lay ratios of single-phase conductive unit 1 control at 25 ~ 30 times, described polypropylene gasket for packing 13 to be circumferentially spacedly distributed at least 4 lug bosses 15 at its outer surface.
The thickness of above-mentioned aluminium-plastic tape 8 is 0.3mm; Above-mentioned polyethylene layer 14 thickness is 1.5mm.
Above-mentioned steel-tape armouring layer 12 is made up of internal layer steel band 121 and outer layer steel belt 122, and the gap of internal layer steel band 121 is covered near middle position by outer layer steel belt 122, and its clearance rate is not more than 50% of steel band bandwidth.
The number of the lug boss 15 of described polypropylene gasket for packing 13 outer surface is 5.
Embodiment 2: a kind of tension, resistance to compression block water medium-pressure power cable, comprise 3 single-phase conductive units 1, this single-phase conductive unit 1 is from inside to outside followed successively by the first semiconductive shielding layer 3, insulating barrier 4, second semiconductive shielding layer 5 that comprise circular copper conductors 2 and be coated on circular copper conductors 2 outer surface successively, one copper strips 61 is wrapped forms metal screen layer 6 in the second semiconductive shielding layer 5 outer surface, one nonwoven fabrics 7 is wrapped in metal screen layer 6 outer surface, one aluminium-plastic tape 8 is vertical is wrapped in described nonwoven fabrics 7 outer surface, and a polyethylene layer 14 is coated on aluminium-plastic tape 8 outer surface;
Pair of lamina CPP is with 9 wrapped in described 3 single-phase conductive unit 1 outer surfaces, this double-deck CPP is with 9 outer surfaces to be coated with polyvinyl chloride inner sheath layer 10 successively, polyvinyl chloride external sheath layer 11, described polyvinyl chloride inner sheath layer 10, steel-tape armouring layer 12 is provided with between polyvinyl chloride external sheath layer 11, described double-deck CPP is with between 9 and 3 single-phase conductive units 1 has some root polypropylene gasket for packings 13, described double-deck CPP is with 9 Duplication to control 20 ~ 30%, described 3 stranded lay ratios of single-phase conductive unit 1 control at 25 ~ 30 times, described polypropylene gasket for packing 13 to be circumferentially spacedly distributed at least 4 lug bosses 15 at its outer surface.
The thickness of above-mentioned aluminium-plastic tape 8 is 0.3mm.
Above-mentioned steel-tape armouring layer 12 is made up of internal layer steel band 121 and outer layer steel belt 122, and the gap of internal layer steel band 121 is covered near middle position by outer layer steel belt 122, and its clearance rate is not more than 50% of steel band bandwidth.
Adopt above-mentioned tension, resistance to compression block water medium-pressure power cable time, it is applicable to 35kV and with the electric power transfer of line, wet environment can be used in, there is good footpath phase water stop function, this product can stop moisture to enter cable inside, protection insulated wire cores is dry, thus extends the useful life of cable; Adopt the box-like stop water of the vertical cladding of phase-splitting, every phase core has waterproof construction separately, this novel product is laid in underground wet environment, entering of moisture content can be blocked completely, effectively improve product waterproof property, greatly improve cable running safety coefficient, improve the useful life of cabling under severe conditions, ensure that cabling can normally work in water; Secondly, has some root polypropylene gasket for packings between its double-deck CPP band with 3 single-phase conductive units, polypropylene gasket for packing to be circumferentially spacedly distributed at least 4 lug bosses at its outer surface, has dispersion and cushions the effect of extraneous stress, its better mechanical property.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection range of the present utility model.
Claims (5)
1. a tension, resistance to compression blocks water medium-pressure power cable, it is characterized in that: comprise 3 single-phase conductive units (1), this single-phase conductive unit (1) is from inside to outside followed successively by the first semiconductive shielding layer (3) comprising circular copper conductors (2) and be coated on circular copper conductors (2) outer surface successively, insulating barrier (4), second semiconductive shielding layer (5), one copper strips (61) is wrapped forms metal screen layer (6) in the second semiconductive shielding layer (5) outer surface, one nonwoven fabrics (7) is wrapped in metal screen layer (6) outer surface, one aluminium-plastic tape (8) is vertical is wrapped in described nonwoven fabrics (7) outer surface, one polyethylene layer (14) is coated on aluminium-plastic tape (8) outer surface,
Pair of lamina CPP is with (9) wrapped in described 3 single-phase conductive unit (1) outer surfaces, this double-deck CPP is with (9) outer surface to be coated with polyvinyl chloride inner sheath layer (10) successively, polyvinyl chloride external sheath layer (11), described polyvinyl chloride inner sheath layer (10), steel-tape armouring layer (12) is provided with between polyvinyl chloride external sheath layer (11), between described double-deck CPP band (9) and 3 single-phase conductive units (1), there is some root polypropylene gasket for packings (13), described double-deck CPP is with (9) Duplication to control 20 ~ 30%, described 3 stranded lay ratios of single-phase conductive unit (1) control at 25 ~ 30 times, described polypropylene gasket for packing (13) to be circumferentially spacedly distributed at least 4 lug bosses (15) at its outer surface.
2. tension according to claim 1, resistance to compression block water medium-pressure power cable, it is characterized in that: the thickness of described aluminium-plastic tape (8) is 0.2 ~ 0.4mm.
3. tension according to claim 1, resistance to compression block water medium-pressure power cable, it is characterized in that: described polyethylene layer (14) thickness is 1.2 ~ 1.8mm.
4. tension according to claim 1, resistance to compression block water medium-pressure power cable, it is characterized in that: described steel-tape armouring layer (12) is made up of internal layer steel band (121) and outer layer steel belt (122), and the gap of internal layer steel band (121) is covered near middle position by outer layer steel belt (122), its clearance rate is not more than 50% of steel band bandwidth.
5. tension according to claim 1, resistance to compression block water medium-pressure power cable, it is characterized in that: the number of the lug boss (15) of described polypropylene gasket for packing (13) outer surface is 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520500021.XU CN204760119U (en) | 2015-07-10 | 2015-07-10 | Tensile, resistance to compression middling pressure power cable that blocks water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520500021.XU CN204760119U (en) | 2015-07-10 | 2015-07-10 | Tensile, resistance to compression middling pressure power cable that blocks water |
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| CN204760119U true CN204760119U (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520500021.XU Expired - Fee Related CN204760119U (en) | 2015-07-10 | 2015-07-10 | Tensile, resistance to compression middling pressure power cable that blocks water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107958727A (en) * | 2017-10-13 | 2018-04-24 | 安徽庆华电缆有限公司 | A kind of fluoroplastic insulation silicon-rubber sheath high-temperature-resistant power cable |
-
2015
- 2015-07-10 CN CN201520500021.XU patent/CN204760119U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107958727A (en) * | 2017-10-13 | 2018-04-24 | 安徽庆华电缆有限公司 | A kind of fluoroplastic insulation silicon-rubber sheath high-temperature-resistant power cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 Termination date: 20170710 |