CN203503354U - watertight water-tree resistance cable - Google Patents
watertight water-tree resistance cable Download PDFInfo
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- CN203503354U CN203503354U CN201320590248.9U CN201320590248U CN203503354U CN 203503354 U CN203503354 U CN 203503354U CN 201320590248 U CN201320590248 U CN 201320590248U CN 203503354 U CN203503354 U CN 203503354U
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Abstract
The utility model provides a watertight water-tree resistance cable, comprising a watertight conductor core, a conductor semiconduction shielding layer, an insulating layer, an insulating semiconduction shielding layer, a metal shielding layer, a semiconduction watertight layer, a watertight layer, a plastic-aluminum composite band inner jacket, a metal sheath and an outer jacket. The watertight conductor core is composed of a plurality of cores and watertight band single conductor wires; the semiconduction watertight layer is formed by overlapping and winding semiconduction watertight bands; the watertight layer is formed by a watertight band or watertight glue. The u watertight water-tree resistance cable utilizes the watertight conductor core, semiconduction watertight layer and watertight layer to increase the vertical watertight performance of a whole cable and has the advantages of scientific design, reliable quality, good watertight performance and long service life.
Description
Technical field
The utility model relates to a kind of water repellent electric cable, specifically, has related to a kind of waterproof tree cable that blocks water.
Background technology
At present power cable with cross-linked polyethylene insulation, has radial water-resisting performance but there is no longitudinal water-blocking performance, its structure from the inside to surface successively: conductor thread core, conductor semiconductive shielding layer, insulating barrier, insulation semiconductive shielding layer and metal screen layer.Three layers of conductor semiconductive shielding layers, insulating barrier, insulation semiconductive shielding layer are extruded on water-blocking conductor core simultaneously, and metallic shield ply is wrapped on insulation semiconductive shielding layer.
Under normal circumstances, existing cable can meet the demands.If had for a long time in the environment of water but cable is used in fire-fighting, humidity etc., or be embedded in underground, under water, or be used in the place that rainwater is many, the longitudinal water-blocking of cable is not enough, because conductor thread core is longitudinally can have some gaps between lay configuration, each layer of cable, for humidity or rainwater environment, rainwater can enter cable from these gaps for a long time, and after moisture is immersed in cable, major effect is conductor thread core and the insulating barrier of cable.With regard to conductor thread core, cable when normal operation in a thermal steady state, conductor thread core temperature is generally all more than 60 ℃, if there is moisture to immerse, will cause conductor oxidation, thereby make the energy loss resistance between conductor thread core single line increase conductor thread core resistance, increased the energy loss of transmission line.With regard to insulating barrier, although being the utmost point, crosslinked polyethylene is insoluble in the nonpolar hydrophobic substance of water, and crosslinked polyethylene is a kind of Piezoelectricity being comprised of crystalline phase and amorphous phase, and crosslinked polyethylene phase structure is tight; But crystal boundary exists defect, the molecules align in amorphous phase is loose, the gap that intermolecular existence is larger.Hydrone is polarity, under alternating electric field, the acting in conjunction of extension and electric field force makes hydrone be easy to be penetrated in the allowance of crosslinked polyethylene amorphous phase and the grain boundary defects of crystalline phase, in crosslinked polyethylene, there is more crosslinked accessory substance to serve as impurity simultaneously, thereby crosslinked polyethylene also has larger water absorption rate under alternating electric field, after crosslinked polyetylene insulated water suction, can produce water tree makes operating cable puncture and damage, meanwhile, greatly shorten the useful life of cable.
In order to solve the problem of above existence, people are seeking a kind of desirable technical solution always.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, thereby provides a kind of design science, reliable in quality, water preventing ability is good and the waterproof tree cable that blocks water of long service life.
To achieve these goals, the technical scheme that the utility model adopts is: a kind of waterproof tree cable that blocks water, comprise water-blocking conductor core, conductor semiconductive shielding layer, insulating barrier, insulation semiconductive shielding layer, metal screen layer, semiconductive water blocking layer, water blocking layer, aluminium-plastic tape sheath, metallic sheath and outer jacket, described water-blocking conductor core is by many cores and waterstop single line is stranded forms, described semiconductive water blocking layer wrappedly forms by semiconductive waterstop is overlapping, described water blocking layer consists of waterstop or the glue that blocks water, between described conductor semiconductive shielding layer and described water-blocking conductor core, be provided with semiconductive water blocking layer, described semiconductive water blocking layer is wrapped on described water-blocking conductor core, described insulating barrier is included on described conductor semiconductive shielding layer, described insulation semiconductive shielding layer is wrapped on described insulating barrier, described metal screen layer is wrapped on described insulation semiconductive shielding layer, overlappingly between described insulation semiconductive shielding layer and described metal screen layer be surrounded with described semiconductive water blocking layer, overlappingly between described metal screen layer and described aluminium-plastic tape sheath be surrounded with described water blocking layer, described metallic sheath is wrapped on described aluminium-plastic tape sheath, overlappingly between described metallic sheath and described aluminium-plastic tape sheath be surrounded with described water blocking layer, described oversheath is wrapped on described metallic sheath, overlappingly between described oversheath and described metallic sheath be surrounded with described water blocking layer.
Based on above-mentioned, described core is copper core or thread core of aluminum or aluminium alloy core.
Based on above-mentioned, described metallic sheath is seamless integral extruding type metal-coating.
Based on above-mentioned, the Duplication of the described semiconductive water blocking layer between described conductor semiconductive shielding layer and described water-blocking conductor core is 10%-15%.
Based on above-mentioned, the Duplication of the described semiconductive water blocking layer between described insulation semiconductive shielding layer and described metal screen layer is 15%-20%.
Based on above-mentioned, the Duplication of described metal screen layer is 15%-20%.
Based on above-mentioned, the Duplication of described water blocking layer is 15%-20%.
The relative prior art of the utility model has substantive distinguishing features and progress, specifically, the utility model adopts water-blocking conductor core to replace traditional conductor thread core, and described water-blocking conductor core is by many cores and waterstop single line is stranded forms, and makes between many cores very close to each other; Increase semiconductive water blocking layer and water blocking layer simultaneously, increase successively the longitudinal water-blocking performance of whole cable; Increase metallic sheath and outer jacket, make cable seal good, do not have gap, effectively stop moisture to enter cable and along the longitudinal flow of cable, prevent from producing water tree after insulating barrier water suction, avoid causing operating cable breakdown because of water tree; It has advantages of design science, reliable in quality, water preventing ability is good and long service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the cross-sectional view of described water-blocking conductor core.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of waterproof tree cable that blocks water, comprise water-blocking conductor core 1, conductor semiconductive shielding layer 2, insulating barrier 3, insulation semiconductive shielding layer 4, metal screen layer 5, semiconductive water blocking layer, water blocking layer, aluminium-plastic tape sheath 6, metallic sheath 7 and outer jacket 8, described water-blocking conductor core 1 is by many cores 21 and waterstop 22 single lines are stranded forms, described semiconductive water blocking layer wrappedly forms by semiconductive waterstop is overlapping, described water blocking layer consists of waterstop or the glue that blocks water, between described conductor semiconductive shielding layer 2 and described water-blocking conductor core 1, be provided with semiconductive water blocking layer 9, described semiconductive water blocking layer 9 is wrapped on described water-blocking conductor core 1, described insulating barrier 3 is wrapped on described conductor semiconductive shielding layer 2, described insulation semiconductive shielding layer 4 is wrapped on described insulating barrier 3, described metal screen layer 5 is wrapped on described insulation semiconductive shielding layer 4, overlappingly between described insulation semiconductive shielding layer 4 and described metal screen layer 5 be surrounded with described semiconductive water blocking layer 10, overlappingly between described metal screen layer 5 and described aluminium-plastic tape sheath 6 be surrounded with described water blocking layer 11, described metallic sheath 7 is wrapped on described aluminium-plastic tape sheath 6, overlappingly between described metallic sheath 7 and described aluminium-plastic tape sheath 6 be surrounded with described water blocking layer 12, described oversheath 8 is wrapped on described metallic sheath 7, overlappingly between described oversheath 8 and described metallic sheath 7 be surrounded with described water blocking layer 11.
Based on above-mentioned, when described water-blocking conductor core 1 is made, between many cores 21, insert waterstop 22 strand adpressings, between single line, extruding makes waterstop 22 breakages, thereby do not affect the electric conductivity of water-blocking conductor core 1, increase semiconductive water blocking layer 9, semiconductive water blocking layer 10, water blocking layer 11 and water blocking layer 12, the sealing that increases whole cable makes the longitudinal water-blocking of whole cable good; Utilize metallic sheath 7 and outer jacket 8, make cable seal good, do not have gap, effectively stop moisture to enter cable and along the longitudinal flow of cable, prevent from producing water tree after insulating barrier water suction, avoid causing operating cable breakdown because of water tree.
Based on above-mentioned, water blocking layer between described aluminium-plastic tape sheath 6 and described metallic sheath 7 12 adopts the glue that blocks water to make, make between the two bonding firmly, described aluminium-plastic tape sheath 6 forms for vertical alclad plastic composite strip.
Based on above-mentioned, described core 21 is copper core or thread core of aluminum or aluminium alloy core, described insulating barrier 3 adopts the insulating material such as polyvinyl chloride, polyethylene to make, and that described oversheath 8 adopts is corrosion-resistant, water-resistant material is made, and increases this useful life of waterproof tree cable in adverse circumstances of blocking water; Described conductor semiconductive shielding layer 2 and described insulation semiconductive shielding layer 4 adopt semiconductor cross-linking polyethylene materials to make, and described metal screen layer 5 adopts copper strips to make.
Based on above-mentioned, described metallic sheath 3 is seamless integral extruding type metal-coatings, makes the good airproof performance of whole cable, does not have gap, effectively stops moisture to enter cable and along the longitudinal flow of cable.
Based on above-mentioned, the Duplication of the described semiconductive water blocking layer 9 between described conductor semiconductive shielding layer 2 and described water-blocking conductor core 1 is 10%-15%, and described semiconductive shielding layer 2, described insulating barrier 3 and described insulation semiconductive shielding layer 4 adopt three layers of mode simultaneously extruding to make.
Based on above-mentioned, the Duplication of the described semiconductive water blocking layer 10 between described insulation semiconductive shielding layer 4 and described metal screen layer 5 is 15%-20%.
Based on above-mentioned, the Duplication of described metal screen layer 5 is 15%-20%.
Based on above-mentioned, described water blocking layer 11 is by overlapping wrapped the forming of waterstop, and Duplication is 15%-20%.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characterictic is equal to replacement embodiment of the present utility model; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (7)
1. the waterproof tree cable that blocks water, comprise water-blocking conductor core, conductor semiconductive shielding layer, insulating barrier, insulation semiconductive shielding layer and metal screen layer, it is characterized in that: it also comprises semiconductive water blocking layer, water blocking layer, aluminium-plastic tape sheath, metallic sheath and outer jacket, described water-blocking conductor core is by many cores and waterstop single line is stranded forms, described semiconductive water blocking layer wrappedly forms by semiconductive waterstop is overlapping, described water blocking layer consists of waterstop or the glue that blocks water, between described conductor semiconductive shielding layer and described water-blocking conductor core, be provided with semiconductive water blocking layer, described semiconductive water blocking layer is wrapped on described water-blocking conductor core, described insulating barrier is wrapped on described conductor semiconductive shielding layer, described insulation semiconductive shielding layer is wrapped on described insulating barrier, described metal screen layer is wrapped on described insulation semiconductive shielding layer, overlappingly between described insulation semiconductive shielding layer and described metal screen layer be surrounded with described semiconductive water blocking layer, overlappingly between described metal screen layer and described aluminium-plastic tape sheath be surrounded with described water blocking layer, described metallic sheath is wrapped on described aluminium-plastic tape sheath, overlappingly between described metallic sheath and described aluminium-plastic tape sheath be surrounded with described water blocking layer, described oversheath is wrapped on described metallic sheath, overlappingly between described oversheath and described metallic sheath be surrounded with described water blocking layer.
2. the waterproof tree cable that blocks water according to claim 1, is characterized in that: described core is copper core or thread core of aluminum or aluminium alloy core.
3. the waterproof tree cable that blocks water according to claim 1 and 2, is characterized in that: described metallic sheath is seamless integral extruding type metal-coating.
4. the waterproof tree cable that blocks water according to claim 3, is characterized in that: the Duplication of the described semiconductive water blocking layer between described conductor semiconductive shielding layer and described water-blocking conductor core is 10%-15%.
5. the waterproof tree cable that blocks water according to claim 4, is characterized in that: the Duplication of the described semiconductive water blocking layer between described insulation semiconductive shielding layer and described metal screen layer is 15%-20%.
6. the waterproof tree cable that blocks water according to claim 5, is characterized in that: the Duplication of described metal screen layer is 15%-20%.
7. the waterproof tree cable that blocks water according to claim 6, is characterized in that: the Duplication of described water blocking layer is 15%-20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320590248.9U CN203503354U (en) | 2013-09-24 | 2013-09-24 | watertight water-tree resistance cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320590248.9U CN203503354U (en) | 2013-09-24 | 2013-09-24 | watertight water-tree resistance cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203503354U true CN203503354U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320590248.9U Expired - Fee Related CN203503354U (en) | 2013-09-24 | 2013-09-24 | watertight water-tree resistance cable |
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| CN (1) | CN203503354U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143390A (en) * | 2014-07-11 | 2014-11-12 | 安徽宏源特种电缆集团有限公司 | Deep water seal rubber sleeve cable and manufacturing process thereof |
| CN117038189A (en) * | 2023-07-12 | 2023-11-10 | 河源坚宝电缆有限公司 | Water-blocking type medium-high voltage power cable |
-
2013
- 2013-09-24 CN CN201320590248.9U patent/CN203503354U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143390A (en) * | 2014-07-11 | 2014-11-12 | 安徽宏源特种电缆集团有限公司 | Deep water seal rubber sleeve cable and manufacturing process thereof |
| CN104143390B (en) * | 2014-07-11 | 2017-10-24 | 安徽宏源特种电缆集团有限公司 | A kind of manufacturing process of deep water sealing Plastic-sheathed Cable |
| CN117038189A (en) * | 2023-07-12 | 2023-11-10 | 河源坚宝电缆有限公司 | Water-blocking type medium-high voltage power cable |
| CN117038189B (en) * | 2023-07-12 | 2024-04-26 | 河源坚宝电缆有限公司 | Water-blocking type medium-high voltage power cable |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20160924 |
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| CF01 | Termination of patent right due to non-payment of annual fee |