CN2599720Y - Cross-linking polyethylene insulated fire resistant water-proof ultraviolet-preventing power cable - Google Patents
Cross-linking polyethylene insulated fire resistant water-proof ultraviolet-preventing power cable Download PDFInfo
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- CN2599720Y CN2599720Y CNU032040911U CN03204091U CN2599720Y CN 2599720 Y CN2599720 Y CN 2599720Y CN U032040911 U CNU032040911 U CN U032040911U CN 03204091 U CN03204091 U CN 03204091U CN 2599720 Y CN2599720 Y CN 2599720Y
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- power cable
- conductor
- resistant waterproof
- crosslinked polyetylene
- insulated fire
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Abstract
A cross-linked PE insulating frame-retardant waterproof anti-ultraviolet power cable comprises insulating cable cores, other external layers from inside to outside comprising frame-retardant belts, a waterproof layer, a inner lining layer, a steel armoured layer and outer jacket. The utility model adds a metal shielded layer, a rodent-resistant steel armoured layer, a frame-retardant layer, a waterproof layer and an anti-ultraviolet layer, so the utility model has excellent anti-ultraviolet performance and other functions including radial waterproof, rodent-resistance and anti-ultraviolet, which improves the safety reliability and service life of the cable largely. The utility model is suitable for the place with high requirements for equipment safety reliability.
Description
Technical field
The utility model relates to a kind of power transmission cable, particularly relates to a kind of rated voltage at 26/35kV and following crosslinked polyetylene insulated fire-resistant waterproof antiultraviolet power cable.
Prior art
Along with development of electric power industry, grow with each passing day to the demand of cross-inked polyethylene power cable in each field, and the security reliability that is used in electric equipments such as subway, nuclear power station, market, hospital, intelligent building requires more and more higher.The structure of common flame retardant cable is to adopt flame-proof PVC as oversheath, and the flame-proof PVC oversheath can discharge a large amount of halogen acid gas when burning, and equipment and instrument and meter around the heavy corrosion also have very big harm to health of human body simultaneously." secondary harm " behind the fire that Here it is it has often been said.And common cable all has certain water penetration, and cable is if long-time running under the environment of humidity, and extraneous moisture will form the water tree at leisure to the insulation internal penetration, finally causes cable insulation to puncture, and influences the useful life of cable.
Summary of the invention
In view of this; the purpose of this utility model is to provide a kind of crosslinked polyetylene insulated protection against rodents armouring low-smoke low-halogen category-A fire-resistant waterproof antiultraviolet power cable that can overcome the defective of prior art; protective layers such as its wrapped successively metallic shield outside crosslinked polyetylene insulated core, protection against rodents armouring, fire-retardant, waterproof, antiultraviolet; can improve the performances such as fire-retardant, protection against rodents, waterproof of cable greatly, improve the security reliability of cable.
For achieving the above object, the technical solution of the utility model is: described crosslinked polyetylene insulated fire-resistant waterproof antiultraviolet power cable comprises insulated wire cores, is wrapped in inhibiting tape, watertight composition, inner covering, the armour of this insulated wire cores periphery and be wrapped in outermost oversheath successively.
Power cable with cross-linked polyethylene insulation of the present utility model is owing to set up protective layers such as metallic shield, protection against rodents armouring, fire-retardant, waterproof, antiultraviolet; therefore has excellent flame-retardant; have radially multiple functions such as waterproof, protection against rodents, antiultraviolet again simultaneously; improved the security reliability and the useful life of cable greatly, be suitable for the place higher the device security reliability requirement.
Description of drawings
Fig. 1 is the structural representation of first embodiment of the present utility model;
Fig. 2 is the structural representation of second embodiment of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is elaborated.
See also Fig. 1: be a specific embodiment of the present utility model.This crosslinked polyetylene insulated fire-resistant waterproof antiultraviolet power cable is a single-core cable, and it comprises single insulated wire cores 1 and is wrapped in the inhibiting tape 3 of this insulated wire cores 1 periphery, watertight composition 4, inner covering 5, armour 6 successively and is wrapped in outermost oversheath 7.
Described insulated wire cores 1 comprises conductor 11, is wrapped in insulating barrier 12, the insulation screen 13 of these conductor 11 peripheries successively; When U0 〉=1.8Kv, outside described conductor (11), also to wrap up one deck conductor shield, the insulation of this conductor 1, shielding, insulation shielding adopt three-layer co-extruded mode to make.
As shown in Figure 2, be the embodiment of another multicore cable of the present utility model.Multicore cable herein is by three insulated wire cores, 1 stranded forming, and the gap between each insulated wire cores 1 is filled with flame retardant type non-hygroscopic filler 2.
The insulating material of described insulating barrier 12 adopts one-step silane cross-linked polyethylene, and crosslinking agent is a liquid silane.The cable of U0 more than 1.8Kv, its conductor screen and insulation screen are extruded simultaneously with insulating barrier.Extrusion equipment adopts the CDCC production line from Finland Nokia-Mai Raphael company import.Whole production line adopts system controlled by computer, can calculate technological parameter according to the NCC program simultaneously.This equipment can the production electric pressure be that 110KV, cross-sectional area of conductor are 800mm
2The insulating barrier of cable.This production line has also been acquired the misalignment measurement instrument from the Siemens import, and the degree of eccentricity can be controlled at below 5%.
U0 is that the insulating barrier of the following cable of 1.8Kv is made on one-step method silanes crosslinked extruder.This one-step method silanes crosslinked extruder also is the equipment from Finland Nokia-Mai Raphael company import.This equipment can realize that three-layer co-extruded+colour band extrudes, and mainly produces 1～10kV crosslinked cable moral insulating barrier.This production line is by system controlled by computer, and is furnished with measuring apparatus of diameter, the online detection of power frequency spark tester and monitoring, and the quality of insulating barrier is guaranteed.
Described inhibiting tape 3 is a low-smoke non-halogen flame-retardant band inner covering, and is wrapped two-layer altogether, and its thickness meets the GB2952 regulation.The oxygen index of this inhibiting tape inner covering 〉=40%, during cable fire, inner covering can charing become shell, forms fire-retardant barrier together, and the combustibles (XLPE) of cable inside are isolated from the outside out, and can decompose again to discharge steam when burning, plays the effect of cooling.Therefore, cable can pass through the category-A burning test, and this high flame retardant inner covering plays a part crucial.
In the course of processing, the temperature of inner covering is enough to make the plastic film fusing of the aluminium/plastic composite strip of watertight composition 4, and is bonded in the inner surface of inner covering, with its formation one, plays the effect of water proof fire retardant.
It is 0.25 or aluminium/plastic composite strip of 0.3mm that described watertight composition 4 is selected thickness for use, adopts vertical packet form, and overlapping width is not less than 10mm, and overlapping with the welding gun heat-sealing closely.Compare with plastics, the internal crystal framework of metal is very fine and close, and favorable waterproof property is arranged.Almost nil as metallic aluminium, plumbous water penetration, they are united with the relatively low PE of water penetration, have constituted a kind of fabulous waterproof, barrier material.Aluminium/plastic composite strip of herein selecting for use as waterproof material radially, is combined with the plastics oversheath 7 that extrudes and have been constituted radially waterproof barrier, makes cable have excellent radially water-proof function.
Particularity according to the vertical job contract skill of aluminium/plastic composite strip, this operation should be carried out with extruding simultaneously of inhibiting tape inner covering inhibiting tape inner covering, in extruding the process of inner covering, the plastic film of aluminium/plastic composite strip can closely be bonded on the inner surface of inner covering, become one with inner covering, increased the waterproof effect of cable.
Bite cable in order to prevent that mouse from gnawing, cause cable insulation to puncture, the utility model selects for use the hard metal tape of material to make armour 6, and is overlapping wrapped on the inner covering of cable, forms the hard metal level of sealing, gnaws and bites thereby the protection cable exempts from mouse.Wherein single-core cable also will be selected nonmagnetic substance for use, and the thickness of metal tape is about 0.12mm, and overlapping wrapped, Duplication is not less than 15%.
This metal level is when cable fire, and the combustible that it is inner is hedged off from the outer world, and can be with facilitating the heat of combustible burning to scatter and disappear rapidly, so also have certain flame retardant effect.
Described oversheath 7 adopts fire-retardant, the antiultraviolet polyolefin jacket material of low-smoke low-halogen category-A, and its thickness meets the GB2952 standard.Its oxygen index 〉=35%, burning discharges the corrosivity index of gas: pH value 〉=2.5, conductivity≤30Ms/mm.Anti-day light aging index: tensile strength, elongation at break rate of change are all between-25%～+ 25% behind the 1008h.This sheath has good flame retardancy, also has the favorable mechanical physical property simultaneously, plays and both protects the cable internal part, and double effects that can be fire-retardant again satisfies the performance requirement of cable.
The structure of described conductor 11 and size conforms GB/T3956 standard.
Claims (9)
1, a kind of crosslinked polyetylene insulated fire-resistant waterproof antiultraviolet power cable is characterized in that: it comprises insulated wire cores (1), is wrapped in this insulated wire cores (1) peripheral inhibiting tape (3), watertight composition (4), inner covering (5), armour (6) and be wrapped in outermost oversheath (7) successively.
2, crosslinked polyetylene insulated fire-resistant waterproof antiultraviolet power cable according to claim 1, it is characterized in that: the number of described insulated wire cores (1) is one, comprises conductor (11), is wrapped in this conductor (11) peripheral insulating barrier (12), insulation screen (13) successively; When U0 〉=1.8Kv, outside described conductor (11), also to wrap up one deck conductor shield, insulation, shielding, the insulation shielding of this conductor (1) adopts three-layer co-extruded mode to make.
3, crosslinked polyetylene insulated fire-resistant waterproof antiultraviolet power cable according to claim 1, it is characterized in that: the number of described insulated wire cores (1) is three or more, each insulated wire cores (1) includes conductor (11), be wrapped in the peripheral insulating barrier (12) of this conductor (11), insulation screen (13), when U0 〉=1.8Kv, outside described conductor (11), also to wrap up one deck conductor shield, the insulation of this conductor (1), shielding, insulation shielding adopts three-layer co-extruded mode to make, described crosslinked polyetylene insulated fire-resistant waterproof antiultraviolet power cable is by stranded the forming of three insulated wire cores (1), and the gap between each insulated wire cores (1) is filled with flame retardant type non-hygroscopic filler (2).
4, according to any one described crosslinked polyetylene insulated fire-resistant waterproof antiultraviolet power cable in the claim 1 to 3, it is characterized in that: the insulating material of described insulating barrier (12) adopts one-step silane cross-linked polyethylene, and crosslinking agent is a liquid silane.
5, according to any one described crosslinked polyetylene insulated fire-resistant waterproof antiultraviolet power cable in the claim 1 to 3, it is characterized in that: described inhibiting tape (3) is the low-smoke non-halogen flame-retardant band, and is wrapped two-layer altogether, and its thickness meets the GB2952 regulation.
6, according to any one described crosslinked polyetylene insulated fire-resistant waterproof antiultraviolet power cable in the claim 1 to 3, it is characterized in that: it is 0.25 or aluminium/plastic composite strip of 0.3mm that described watertight composition (4) is selected thickness for use, adopt vertical packet form, overlapping width is not less than 10mm, and overlapping with the welding gun heat-sealing closely.
7, according to any one described crosslinked polyetylene insulated fire-resistant waterproof antiultraviolet power cable in the claim 1 to 3, it is characterized in that: described armour (6) is selected the hard metal tape of material for use, single-core cable is selected nonmagnetic substance for use, the thickness of metal tape is about 0.12mm, overlapping wrapped, Duplication is not less than 15%.
8, according to any one described crosslinked polyetylene insulated fire-resistant waterproof antiultraviolet power cable in the claim 1 to 3, it is characterized in that: described oversheath (7) adopts low smoke and low halogen, antiultraviolet polyolefin jacket material, and its thickness meets the GB2952 standard.
9, according to any one described crosslinked polyetylene insulated fire-resistant waterproof antiultraviolet power cable in the claim 1 to 3, it is characterized in that: the structure of described conductor (11) and size conforms GB/T3956 standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032040911U CN2599720Y (en) | 2003-02-13 | 2003-02-13 | Cross-linking polyethylene insulated fire resistant water-proof ultraviolet-preventing power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032040911U CN2599720Y (en) | 2003-02-13 | 2003-02-13 | Cross-linking polyethylene insulated fire resistant water-proof ultraviolet-preventing power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2599720Y true CN2599720Y (en) | 2004-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032040911U Expired - Fee Related CN2599720Y (en) | 2003-02-13 | 2003-02-13 | Cross-linking polyethylene insulated fire resistant water-proof ultraviolet-preventing power cable |
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| CN (1) | CN2599720Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915184A (en) * | 2014-03-18 | 2014-07-09 | 新宇电缆集团股份有限公司 | Waterproof anti-ultraviolet special cable |
| CN103928144A (en) * | 2014-03-27 | 2014-07-16 | 安徽长风电缆集团有限公司 | Ultraviolet-proof cable with high temperature resistance |
| CN104103369A (en) * | 2013-04-10 | 2014-10-15 | 江苏远红电缆有限公司 | Novel single-core cross-linked armored cable |
| CN104409159A (en) * | 2014-12-12 | 2015-03-11 | 江苏亨通高压电缆有限公司 | Three-phase twisted cable |
| CN110491594A (en) * | 2019-08-30 | 2019-11-22 | 安徽电缆股份有限公司 | A kind of cross-linking polyethylene insulated fire resistant water-proof ultraviolet-preventing power cable |
-
2003
- 2003-02-13 CN CNU032040911U patent/CN2599720Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103369A (en) * | 2013-04-10 | 2014-10-15 | 江苏远红电缆有限公司 | Novel single-core cross-linked armored cable |
| CN103915184A (en) * | 2014-03-18 | 2014-07-09 | 新宇电缆集团股份有限公司 | Waterproof anti-ultraviolet special cable |
| CN103928144A (en) * | 2014-03-27 | 2014-07-16 | 安徽长风电缆集团有限公司 | Ultraviolet-proof cable with high temperature resistance |
| CN104409159A (en) * | 2014-12-12 | 2015-03-11 | 江苏亨通高压电缆有限公司 | Three-phase twisted cable |
| CN110491594A (en) * | 2019-08-30 | 2019-11-22 | 安徽电缆股份有限公司 | A kind of cross-linking polyethylene insulated fire resistant water-proof ultraviolet-preventing power cable |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20050429 Pledge (preservation): Preservation |
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| PP01 | Preservation of patent right |
Effective date of registration: 20051014 Pledge (preservation): Preservation |
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| PD01 | Discharge of preservation of patent |
Date of registration: 20061002 Pledge (preservation): Preservation |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040114 Termination date: 20100213 |