CN203150293U - Self-locking type armored tidewater-retaining and water-blocking single-core medium-voltage power cable - Google Patents
Self-locking type armored tidewater-retaining and water-blocking single-core medium-voltage power cable Download PDFInfo
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- CN203150293U CN203150293U CN 201320096254 CN201320096254U CN203150293U CN 203150293 U CN203150293 U CN 203150293U CN 201320096254 CN201320096254 CN 201320096254 CN 201320096254 U CN201320096254 U CN 201320096254U CN 203150293 U CN203150293 U CN 203150293U
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- blocking
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Abstract
The utility model discloses a self-locking type armored tidewater-retaining and water-blocking single-core medium-voltage power cable, which comprises a water-blocking conductor. The outside of the water-blocking conductor is sequentially coated with three layers of co-extruded insulated conductor cores, a metal shielding layer, a composite tidewater-retaining and water-blocking layer, a self-locking type armored tidewater-retaining layer and a water-blocking outer sheath. The three layers of co-extruded insulated conductor cores are composed of a conductor shielding layer, an insulating layer and an insulation shielding layer. The composite tidewater-retaining and water-blocking layer is composed of an aluminum-plastics longitudinal wrap and a polyethylene extruded wrap. The self-locking type armored tidewater-retaining and water-blocking single-core medium-voltage power cable has the advantages of simple structure, reasonable design, low cost and good water-blocking performance. Due to the adoption of the self-locking type armored tidewater-retaining and water-blocking single-core medium-voltage power cable, the discharging phenomenon between a conductor and an insulator can be avoided, so that the occurrence of fire hazards is prevented.
Description
Technical field
The utility model relates to the cable technology field, relates in particular to a kind of self-locking armouring retaining tide-bound water list core midium voltage cable.
Background technology
At present for the requirement of retaining tide-bound ability of swimming list core midium voltage cable for will have resistance to compression tensile characteristics and waterproof fireproofing characteristic, there are a lot of shortcomings in this type of cable in the prior art, product cost is too high, anti-pressure ability is poor, and waterproof fireproofing ability, and mechanical performance and electric property are bad, can not satisfy the demand of prior art.
The utility model content
The utility model purpose is exactly in order to remedy the defective of prior art, a kind of self-locking armouring retaining tide-bound water list core midium voltage cable to be provided.
The utility model is achieved through the following technical solutions:
A kind of self-locking armouring retaining tide-bound water list core midium voltage cable, include water-blocking conductor, be coated with three-layer co-extruded insulated wire cores successively in the described water-blocking conductor outside, metal screen layer, compound retaining tide-bound water layer, self-locking armouring moisture-proof layer and waterproofing type oversheath, described three-layer co-extruded insulated wire cores is by conductor shield, insulating barrier and insulation screen are formed, described compound retaining tide-bound water layer is extruded by the vertical bag of plastic-aluminum band and polythene material to be formed, plastic-aluminum was directly indulged the plastic-aluminum band above the water blocking layer that wraps in outside the metal screen layer through vertical bag mould before polyethylene is extruded, polyethylene sheath directly is extruded in the frosting layer of plastic-aluminum combined layer, the two well in conjunction with as a whole, plays the effect that vertically blocks water under action of high temperature.
Described water-blocking conductor is copper free wire, presses coefficient greater than 0.92, the conductive surface light, and size is accurate, and smears water-proofing powder on every layer of compact conductor surface, makes it have vertical water stop function.
Described three-layer co-extruded insulated wire cores structure is to adopt the chemical crosslinking mode to be extruded in simultaneously on the compact conductor through the three-layer co-extruded plastic extruding machine of catenary suspension type continuous vulcanization, plays and eliminates the concentrated and homogenizing effect of electric field of conductive surface electric field, prevents discharge between conductor and the insulation.
Described metal screen layer is that anaerobic soft copper band is overlapping wrapped; and at its overlapping wrapped one deck waterstop in surface; failure cable in the electromagnetic interference that main effect has produce when cable switched on electromagnetic-field-shielded to reduce in insulated wire cores to produce to external world and the scope of design that system is produced is introduced grounding system safely; the protection system safe operation makes cable have certain vertical water preventing ability.
Described self-locking armouring moisture-proof layer is one deck continuous wave pattern shape aluminum alloy strip self-locking armouring, one enclose tightly be locked on the compound moisture-proof layer, one deck aluminum alloy strip rolls continuous wave pattern self-locking armouring through the lock armo machine, not only have good soft bendability, but also have good retaining tide-bound water function.
The density polyethylene sheath material that blocks water extruded and forms during described waterproofing type oversheath adopted, this material itself have good water-fast row can and cold resistance, and in prescription, added water-fast stabilizer, so this material has the performance that well blocks water.
The utility model has the advantages that: the utility model is simple in structure, and is reasonable in design, and product cost is low, and block-water performance is good, and can prevent discharge between conductor and the insulation, avoids the generation of fire.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of self-locking armouring retaining tide-bound water list core midium voltage cable, include water-blocking conductor 1, be coated with three-layer co-extruded insulated wire cores successively in described water-blocking conductor 1 outside, metal screen layer 5, compound retaining tide-bound water layer 6, self-locking armouring moisture-proof layer 7 and waterproofing type oversheath 8, described three-layer co-extruded insulated wire cores is by conductor shield 2, insulating barrier 3 and 4 layers of composition of insulation shielding, described compound retaining tide-bound water layer 6 is extruded by the vertical bag of plastic-aluminum band and polythene material to be formed, plastic-aluminum was directly indulged the plastic-aluminum band above the water blocking layer that wraps in outside the metal screen layer through vertical bag mould before polyethylene is extruded, polyethylene sheath directly is extruded in the frosting layer of plastic-aluminum combined layer, the two well in conjunction with as a whole, plays the effect that vertically blocks water under action of high temperature.
Described water-blocking conductor 1 is copper free wire, presses coefficient greater than 0.92, the conductive surface light, and size is accurate, and smears water-proofing powder on every layer of compact conductor surface, makes it have vertical water stop function.
Described three-layer co-extruded insulated wire cores structure is to adopt the chemical crosslinking mode to be extruded in simultaneously on the compact conductor through the three-layer co-extruded plastic extruding machine of catenary suspension type continuous vulcanization, plays and eliminates the concentrated and homogenizing effect of electric field of conductive surface electric field, prevents discharge between conductor and the insulation.
Described metal screen layer 5 is that anaerobic soft copper band is overlapping wrapped; and at its overlapping wrapped one deck waterstop in surface; failure cable in the electromagnetic interference that main effect has produce when cable switched on electromagnetic-field-shielded to reduce in insulated wire cores to produce to external world and the scope of design that system is produced is introduced grounding system safely; the protection system safe operation makes cable have certain vertical water preventing ability.
Described self-locking armouring moisture-proof layer 7 is one deck continuous wave pattern shape aluminum alloy strip self-locking armouring, one enclose tightly be locked on the compound moisture-proof layer, one deck aluminum alloy strip rolls continuous wave pattern self-locking armouring through the lock armo machine, not only have good soft bendability, but also have good retaining tide-bound water function.
The density polyethylene sheath material that blocks water extruded and forms during described waterproofing type oversheath 8 adopted, this material itself have good water-fast row can and cold resistance, and in prescription, added water-fast stabilizer, so this material has the performance that well blocks water.
Claims (6)
1. a self-locking armouring keeps off tide-bound water list core midium voltage cable, it is characterized in that: include water-blocking conductor, be coated with three-layer co-extruded insulated wire cores, metal screen layer, compound retaining tide-bound water layer, self-locking armouring moisture-proof layer and waterproofing type oversheath successively in the described water-blocking conductor outside, described three-layer co-extruded insulated wire cores is made up of conductor shield, insulating barrier and insulation screen, and described compound retaining tide-bound water layer is extruded by the vertical bag of plastic-aluminum band and polythene material to be formed.
2. self-locking armouring according to claim 1 keeps off tide-bound water list core midium voltage cable, and it is characterized in that: described water-blocking conductor is copper free wire, presses coefficient greater than 0.92.
3. self-locking armouring according to claim 1 keeps off tide-bound water list core midium voltage cable, it is characterized in that: described three-layer co-extruded insulated wire cores structure is to adopt the chemical crosslinking mode to be extruded on the compact conductor simultaneously through the three-layer co-extruded plastic extruding machine of catenary suspension type continuous vulcanization.
4. self-locking armouring according to claim 1 keeps off tide-bound water list core midium voltage cable, and it is characterized in that: described metal screen layer is that anaerobic soft copper band is overlapping wrapped, and at its overlapping wrapped one deck waterstop in surface.
5. self-locking armouring according to claim 1 retaining tide-bound water list core midium voltage cable, it is characterized in that: described self-locking armouring moisture-proof layer is one deck continuous wave pattern shape aluminum alloy strip self-locking armouring, one enclose tightly be locked on the compound moisture-proof layer.
6. self-locking armouring according to claim 1 retaining tide-bound water list core midium voltage cable is characterized in that: the density polyethylene sheath material that blocks water extruded and forms during described waterproofing type oversheath adopted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320096254 CN203150293U (en) | 2013-03-04 | 2013-03-04 | Self-locking type armored tidewater-retaining and water-blocking single-core medium-voltage power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320096254 CN203150293U (en) | 2013-03-04 | 2013-03-04 | Self-locking type armored tidewater-retaining and water-blocking single-core medium-voltage power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203150293U true CN203150293U (en) | 2013-08-21 |
Family
ID=48977802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320096254 Expired - Fee Related CN203150293U (en) | 2013-03-04 | 2013-03-04 | Self-locking type armored tidewater-retaining and water-blocking single-core medium-voltage power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203150293U (en) |
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2013
- 2013-03-04 CN CN 201320096254 patent/CN203150293U/en not_active Expired - Fee Related
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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: 20130821 Termination date: 20140304 |