CN201965987U - Medium-voltage power cable - Google Patents
Medium-voltage power cable Download PDFInfo
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- CN201965987U CN201965987U CN2010206792730U CN201020679273U CN201965987U CN 201965987 U CN201965987 U CN 201965987U CN 2010206792730 U CN2010206792730 U CN 2010206792730U CN 201020679273 U CN201020679273 U CN 201020679273U CN 201965987 U CN201965987 U CN 201965987U
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Abstract
The utility model discloses a medium-voltage power cable. The power cable comprises conductors, insulating layers, a packing material, a water blocking layer, an outer sheath, shielding layers, a flame retardant layer, a water retaining layer and an armor layer, wherein the conductors are wrapped in the insulating layers; the insulating layers are wrapped in the shielding layers; the conductors, the insulating layers and the shielding layers form wire cores; a plurality of wire cores are stranded to form a cable core; the cable core is wrapped in the flame retardant layer; the packing material is arranged between the adjacent wire cores; and the water blocking layer, the water retaining layer, the armor layer and the outer sheath are sequentially arranged outside the flame retardant layer. The medium-voltage power cable has flame retardant and waterproof functions, and can meet the use requirement that the flame retardant and waterproof functions are needed when the medium-voltage power cable is applied to pipelines, drilled shafts and the like.
Description
Technical field
The utility model relates to a kind of medium-pressure power cable, and particularly a kind of have fire-retardant and medium-pressure power cable water-proof function simultaneously.
Background technology
Along with the progress in epoch, the safe and reliable row that is used for electric equipments such as subway, school, market, hospital, nuclear power station and skyscraper requires more and more higher, has also proposed strict more requirement for the reliability to the cable of its power supply.Flame-proof crosslinked polyethylene insulation medium-pressure power cable in the past all has certain water penetration, lays for a long time under many water, wet environments such as pipeline, vertical shaft, and the inner water tree that easily produces of insulating causes insulation breakdown, cable minimizing in useful life.Water proof type cable in the past, its material mostly are polyethylene and constitute, and do not have corresponding flame retarding construction, and combustion-supporting phenomenon, the security of the lives and property that threatens people easily take place when fire takes place.On January 20th, 2010, Patent Office of the People's Republic of China discloses the novel patent of use of a kind of by name " cross-linked polyethylene insulated waterproof cable ", and (notification number: CN201387750), it is made up of conductor, insulating barrier, packed layer, water blocking layer, watertight composition, oversheath.This utility model is mainly used in the ordinary tides wet environment, the occasion that the anti-flammability that is unsuitable for being laid in requires.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned defective that existing anti-flammability cable exists, and a kind of medium-pressure power cable is provided, and the utlity model has fire-retardant and water-proof function, can satisfy in the instructions for use of the fire-retardant and water-proof function of needs simultaneously such as pipeline, vertical shaft.
For realizing this purpose, the technical solution adopted in the utility model is as follows:
A kind of medium-pressure power cable, comprise conductor, insulating barrier, inserts, water blocking layer and oversheath, it is characterized in that: also comprise screen, flame-retardant layer, watertight layer and armour, described conductor is wrapped in the insulating barrier, and insulating barrier is wrapped in the screen, and conductor, insulating barrier and screen form core, the many stranded formation cable cores of core, cable core is wrapped in the flame-retardant layer, is inserts between the adjacent core, and flame-retardant layer is followed successively by water blocking layer, watertight layer, armour and oversheath outward.
Described flame-retardant layer is by the wrapped flame-retardant layer that forms of glass fiber tape.
Described insulating barrier is by the three-layer co-extruded insulating barrier that forms of conductor shield, insulating barrier and insulation screen.
Described water blocking layer is axial water blocking layer, and is wrapped by polyester fiber woven cloths and the compounded waterstop of high-absorbent material.
Described watertight layer by the vertical simultaneously bag of aluminium-plastic tape and high density polyethylene (HDPE) inner sheath is extruded and wrapped steel band forms union channel to watertight layer.
Screen on the described core is the copper strips screen.
Adopt advantage of the present utility model to be:
One, its water-proof function of the utility model be union channel to the watertight layer composite construction can be good the moisture that stops radially enter; Axially water blocking layer has excellent water absorption; and can after suction, be expanded to hundreds of times of itself volume rapidly, stop the Radial Flow of moisture, and can support union channel outside it to watertight layer by bulking effect; make it to compress sealing, play the effect of protection cable.
Two, the utility model adopts axial water blocking layer and union channel to the many structurally waterproofs of watertight layer, and anti-sealing tree generates, and prolongs cable useful life.
Three, the utility model adopts the structure of flame-retardant layer and fire-retardant oversheath, satisfies the fire resistance demand, ensures personal safety as well as the property safety.
Four, the utility model adopts the three-layer co-extruded cross-linking polyethylene insulation, the electric pressure height, and transmission capacity is big; Adopt the shielding of copper strips subitem, steel-tape armouring has limited Electric Field Distribution, has improved the stability of cable.
Description of drawings
Fig. 1 is a cross section structure schematic diagram of the present utility model.
Be labeled as among the figure: 1 is conductor, and 2 is insulating barrier, and 3 is screen, and 4 is flame-retardant layer, and 5 is water blocking layer, 6 watertight layers, and 7 is inserts, and 8 is armour, and 9 is oversheath.
Embodiment
Embodiment 1
A kind of medium-pressure power cable, comprise conductor, insulating barrier, inserts, water blocking layer and oversheath, also comprise screen, flame-retardant layer, watertight layer and armour, described conductor is wrapped in the insulating barrier, and insulating barrier is wrapped in the screen, and conductor, insulating barrier and screen form core, the many stranded formation cable cores of core, cable core is wrapped in the flame-retardant layer, is inserts between the adjacent core, and flame-retardant layer is followed successively by water blocking layer, watertight layer, armour and oversheath outward.
One of preferred implementation of the present utility model is that flame-retardant layer is by the wrapped flame-retardant layer that forms of glass fiber tape.
Preferred implementation of the present utility model is that insulating barrier is by the three-layer co-extruded insulating barrier that forms of conductor shield, insulating barrier and insulation screen.
Preferred implementation of the present utility model is that water blocking layer is axial water blocking layer, and is wrapped by polyester fiber woven cloths and the compounded waterstop of high-absorbent material.
Preferred implementation of the present utility model is, watertight layer by aluminium-plastic tape and the vertical simultaneously bag of high density polyethylene (HDPE) inner sheath is extruded and wrapped steel band forms union channel to watertight layer.
Preferred implementation of the present utility model is that the screen on the core is the copper strips screen.
As shown in Figure 1, the utility model fire-resistant waterproof function medium-pressure power cable is by conductor, three-layer co-extruded insulating barrier (comprising conductor screen, insulation, insulation shielding), the copper strips screen, flame-retardant layer, axially water blocking layer, union channel is to watertight layer (comprising plastic-aluminum combined belt, high-density polyethylene layer), fill, armour, fire-retardant oversheath is formed.Flame-retardant layer is by glass fiber tape wrapped forming on cable core; Axially water blocking layer adopts wrapped by polyester fiber woven cloths and the compounded waterstop of high-absorbent material; Union channel is extruded by aluminium-plastic tape and the vertical simultaneously bag of high density polyethylene (HDPE) inner sheath to watertight layer and is formed, plastic-aluminum combined vertical being wrapped on the axial water blocking layer, put up rate 10%, adopt two heat gun heating double moldses to press at the place of putting up, guarantee bonding fully, then enter rapidly and extrude the high density crosslinked polyethylene in the plastic extruding machine, double-layer structure is closely in conjunction with reaching good dash effect; Then wrapped steel band also extrudes oxygen index greater than 30% fire-retardant oversheath.
Claims (6)
1. medium-pressure power cable, comprise conductor, insulating barrier, inserts, water blocking layer and oversheath, it is characterized in that: also comprise screen, flame-retardant layer, watertight layer and armour, described conductor is wrapped in the insulating barrier, and insulating barrier is wrapped in the screen, and conductor, insulating barrier and screen form core, the many stranded formation cable cores of core, cable core is wrapped in the flame-retardant layer, is inserts between the adjacent core, and flame-retardant layer is followed successively by water blocking layer, watertight layer, armour and oversheath outward.
2. medium-pressure power cable according to claim 1 is characterized in that: described flame-retardant layer is by the wrapped flame-retardant layer that forms of glass fiber tape.
3. medium-pressure power cable according to claim 1 and 2 is characterized in that: described insulating barrier is by the three-layer co-extruded insulating barrier that forms of conductor shield, insulating barrier and insulation screen.
4. medium-pressure power cable according to claim 3 is characterized in that: described water blocking layer is axial water blocking layer.
5. according to claim 1,2 or 4 described medium-pressure power cables, it is characterized in that: described watertight layer by the vertical simultaneously bag of aluminium-plastic tape and high density polyethylene (HDPE) inner sheath is extruded and wrapped steel band forms union channel to watertight layer.
6. medium-pressure power cable according to claim 5 is characterized in that: the screen on the described core is the copper strips screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206792730U CN201965987U (en) | 2010-12-24 | 2010-12-24 | Medium-voltage power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206792730U CN201965987U (en) | 2010-12-24 | 2010-12-24 | Medium-voltage power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201965987U true CN201965987U (en) | 2011-09-07 |
Family
ID=44528540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206792730U Expired - Fee Related CN201965987U (en) | 2010-12-24 | 2010-12-24 | Medium-voltage power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201965987U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543283A (en) * | 2011-12-26 | 2012-07-04 | 大连兆阳软件科技有限公司 | Novel solar cable |
| CN102855968A (en) * | 2012-05-04 | 2013-01-02 | 无锡市恒汇电缆有限公司 | Micro-hole moistureproof electric wire, production method and dedicated die |
| CN103928145A (en) * | 2013-09-29 | 2014-07-16 | 安徽天龙电器线缆集团有限公司 | Low-smoke inflaming retarding marine cable without inner sleeve |
| CN107118461A (en) * | 2017-04-28 | 2017-09-01 | 国网山东省电力公司平原县供电公司 | A kind of cable insulation Insulation Material and water-bed composite cable |
| CN108766657A (en) * | 2018-06-02 | 2018-11-06 | 新沂市中诺新材料科技有限公司 | A kind of anti-interference flame retardant type cable |
| CN114429838A (en) * | 2022-01-12 | 2022-05-03 | 云南多宝电缆集团股份有限公司 | DC1500V direct current traction power cable for plateau climate type rail transit |
-
2010
- 2010-12-24 CN CN2010206792730U patent/CN201965987U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543283A (en) * | 2011-12-26 | 2012-07-04 | 大连兆阳软件科技有限公司 | Novel solar cable |
| CN102855968A (en) * | 2012-05-04 | 2013-01-02 | 无锡市恒汇电缆有限公司 | Micro-hole moistureproof electric wire, production method and dedicated die |
| CN103928145A (en) * | 2013-09-29 | 2014-07-16 | 安徽天龙电器线缆集团有限公司 | Low-smoke inflaming retarding marine cable without inner sleeve |
| CN103928145B (en) * | 2013-09-29 | 2017-04-26 | 安徽天龙电器线缆集团有限公司 | Low-smoke inflaming retarding marine cable without inner sleeve |
| CN107118461A (en) * | 2017-04-28 | 2017-09-01 | 国网山东省电力公司平原县供电公司 | A kind of cable insulation Insulation Material and water-bed composite cable |
| CN108766657A (en) * | 2018-06-02 | 2018-11-06 | 新沂市中诺新材料科技有限公司 | A kind of anti-interference flame retardant type cable |
| CN108766657B (en) * | 2018-06-02 | 2019-09-17 | 云南多宝电缆集团股份有限公司 | A kind of anti-interference flame retardant type cable |
| CN114429838A (en) * | 2022-01-12 | 2022-05-03 | 云南多宝电缆集团股份有限公司 | DC1500V direct current traction power cable for plateau climate type rail transit |
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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: 20110907 Termination date: 20151224 |
|
| EXPY | Termination of patent right or utility model |