CN203982857U - A kind of specified alternating voltage 750V water proof fire retardant cable - Google Patents
A kind of specified alternating voltage 750V water proof fire retardant cable Download PDFInfo
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- CN203982857U CN203982857U CN201420360117.6U CN201420360117U CN203982857U CN 203982857 U CN203982857 U CN 203982857U CN 201420360117 U CN201420360117 U CN 201420360117U CN 203982857 U CN203982857 U CN 203982857U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The utility model discloses a kind of specified alternating voltage 750V water proof fire retardant cable; comprise the core being formed by least one wire and be wrapped in the protective sleeve outside core; every described core is all coated with a layer insulating outward; between adjacent described wire, be equipped with longitudinal waterproof construction between wire and protective sleeve internal layer, described protective sleeve is by comprising successively separator, metal screen layer, flame-retardant layer, waterproof moisture-proof layer, cable jacket outside interior.The utility model has the advantages that: existing longitudinal water-blocking gear moisture knot structure is also by the radial water-resisting gear moisture knot structure being made up of flame-retardant layer and waterproof moisture-proof layer, and consider that the fuel gas that may exist in circuit is specially provided with flame-retardant layer structure, reliability and the fail safe of cable line control are greatly increased, when occurring under abnormal conditions, can not produce a large amount of pollutants, really realize the feature of safety, environmental protection, greatly eliminate and reduce the risk that control cables breaks down and destroys under many ponding, inflammable environment, having a significant effect.
Description
Technical field
The utility model relates to a kind of specified alternating voltage 750V water proof fire retardant cable.
Background technology
Be accompanied by the development of social all trades and professions automation, the application of electric-automation control system is also more and more extensive, especially in the industry such as industrial and mineral, power transmission and distribution, generally adopt low-voltage, the control system of little electric current manipulates the electric equipment of remote high voltage, large electric current.As the carrier-control cables of signal among control system, its application nature is also more and more extensive.
General specified alternating voltage 750V cable comprises many conductors, conductor is coated with insulating barrier, between conductor, being provided with PP rope fills, outside separator on being coated after many conductor bundle strands, metal screen layer and external sheath layer, when control system is grown apart from controlling equipment, because intermediate distance is far away, environment for use may be complicated various, as moist and be full of the mine of gas or infiltrate a large amount of ponding among cable laying passage, among ponding or have algal bloom to grow, biological generation or organic substance corruption all can discharge fuel gas, this has brought potential danger to control cables, and then to industrial and mineral, electrical power trans mission/distribution system has brought huge potential safety hazard.
Control cables, because far distance controlled is large-scale with equipment, is had higher requirement to its functional reliability, therefore under particular surroundings, resolves control cables moistureproof and waterproof, the work such as fire-retardant seems particularly important.
Utility model content
The purpose of this utility model is to provide a kind of specified alternating voltage 750V water proof fire retardant cable, can effectively solve existing specified alternating voltage 750V cable moistureproof and waterproof and the bad problem of flame retardant effect.
In order to solve the problems of the technologies described above; the utility model is achieved through the following technical solutions: a kind of specified alternating voltage 750V water proof fire retardant cable; comprise the core being formed by least one wire and be wrapped in the protective sleeve outside core; every described core is all coated with a layer insulating outward; between adjacent described wire, be equipped with longitudinal waterproof construction between wire and protective sleeve internal layer, described protective sleeve is by comprising successively separator, metal screen layer, flame-retardant layer, waterproof moisture-proof layer, cable jacket outside interior.
Preferably, described longitudinal waterproof construction is waterproofing rope packed layer; Go to play the effect of longitudinal waterproof gear tide in the use procedure of cable.
Preferably, described metal screen layer is circular copper wire woven mesh or soft copper band, and the count of described woven mesh is not less than 85%; Play good shield effectiveness, prevent the interference of external electromagnetic signal to cable current.
Compared with prior art, the utility model has the advantages that: for substituting the general control cable at dark moist cable passage, existing longitudinal water-blocking gear moisture knot structure is also by the radial water-resisting gear moisture knot structure being made up of flame-retardant layer and waterproof moisture-proof layer, and consider that the fuel gas that may exist in circuit is specially provided with flame-retardant layer structure, reliability and the fail safe of cable line control are greatly increased, the flame retarding construction of cable and material adopt environment-friendly materials, when occurring under abnormal conditions, can not produce a large amount of pollutants, really realize safety, the feature of environmental protection, control cables be eliminated and be reduced to its application can greatly at many ponding, the risk that breaks down and destroy under inflammable environment, have a significant effect.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of specified alternating voltage 750V water proof fire retardant cable of the utility model.
Embodiment
Consulting Fig. 1 is the embodiment of a kind of specified alternating voltage 750V water proof fire retardant cable of the utility model, a kind of specified alternating voltage 750V water proof fire retardant cable, comprise the core being formed by least one wire 1 and be wrapped in the protective sleeve outside core, every described core is all coated with a layer insulating 2 outward, between adjacent described wire 1, between wire 1 and protective sleeve internal layer, be equipped with longitudinal waterproof construction, described longitudinal waterproof construction is waterproofing rope packed layer 3, described protective sleeve is by comprising successively separator 4 outside interior, metal screen layer 5, flame-retardant layer 6, waterproof moisture-proof layer 7, cable jacket 8, described metal screen layer 5 is circular copper wire woven mesh or soft copper band, the count of described woven mesh is not less than 85%.
Conductor 1 can be divided into soft structure and two kinds of forms of rigid structure, the general application of soft structure is with the mobile use of laying, rigid structure is generally applied to and fixedly lays use, soft structure conductor forms the general once bundle strand that adopts of small bore, first carry out strand bundle strand for the general employing in heavy in section, then carry out the production technology that strand twists again and produce.Rigid structure is when the 1st kind of circular solids conductor of the general direct employing of small bore, and heavy in section generally adopts the 2nd kind of circular stranded conductor.When stranding, between insulating barrier 2 and separator 4, fill rounding, closely knit waterproofing rope and form the waterproofing rope packed layer 3 of cable, go to play the effect of longitudinal waterproof gear tide in the use procedure of cable.Once the unexpected damage and water inflow of control cables sheath, waterproofing rope packed layer water-swellable plays a role, and delays and stop the further immersion of moisture, reduces the length of moisture infringement control cables, facilitates the repairing work after control cables accident and reduces the loss.Separator 4 forms by non-absorbent material polyester belt two superimposed is wrapped.Metal screen layer 5 is formed by the braiding of electrician's circular copper wire or electrician's anneal soft copper band is wrapped forms, and its objective is and prevents the interference of external electromagnetic signal to cable current, affects the reliability of control system.Metal screen layer 5 is outside equipped with flame-retardant layer 6, when the object of the setting of flame-retardant layer 6 is the situations such as reply field of employment breaking out of fire, does not make the effect of cable fire.Between cable jacket 8 and flame-retardant layer 6, there is waterproof moisture-proof layer 7, waterproof moisture-proof layer 7 adopts the mode of production of vertical alclad plastic composite strip to produce, before vertical bag, first pass through high-temperature heating, make plastic layer generation melting, vertical like this bag is put up place's plastics formation sealing metal adhered to one another layer, aluminium-plastic tape after heating is closely linked mutually with following the oversheath 8 that extrudes production closely simultaneously, and waterproof moisture-proof layer 7 and oversheath 8 are combined the radially waterproof that forms cable and kept off moisture knot structure.Oversheath 8 adopts the oversheath that extrudes environmental protection flame retardant material formation cable.
The increase of flame-retardant layer 6 and waterproof moisture-proof layer 7 and a kind of key for specified alternating voltage 750V water proof fire retardant control cables under particular surroundings of invention that bases on practicality, the application of flame-retardant layer 6 and with the fire resistance that can effectively improve cable that is used in conjunction with of oversheath 8, the radially waterproof that the increase of waterproof moisture-proof layer 7 coordinates oversheath 8 can greatly improve cable is kept off damp performance, when in cable sheath generation anomalous fracture situation, waterproofing rope packed layer 3 can stop moisture or moisture along cable longitudinal diffusion effectively, can strive for the quality time for the reparation of cable.So having significantly fire-retardant and waterproof, this invention keeps off damp performance.
For using ac rated voltage 750V water proof fire retardant control cables can greatly improve fail safe, the reliability of control system for long distance line electric control system in the cable passage under particular surroundings.
The foregoing is only specific embodiment of the utility model, but technical characterictic of the present utility model is not limited to this, any those skilled in the art is in field of the present utility model, and the variation of doing or modification are all encompassed among the scope of the claims of the present utility model.
Claims (3)
1. a specified alternating voltage 750V water proof fire retardant cable; it is characterized in that: comprise the core being formed by least one wire (1) and be wrapped in the protective sleeve outside core; every described core is all coated with a layer insulating (2) outward; between adjacent described wire (1), be equipped with longitudinal waterproof construction between wire (1) and protective sleeve internal layer, described protective sleeve is by comprising successively separator (4), metal screen layer (5), flame-retardant layer (6), waterproof moisture-proof layer (7), cable jacket (8) outside interior.
2. the specified alternating voltage 750V of one as claimed in claim 1 water proof fire retardant cable, is characterized in that: described longitudinal waterproof construction is waterproofing rope packed layer (3).
3. the specified alternating voltage 750V of one as claimed in claim 1 water proof fire retardant cable, is characterized in that: described metal screen layer (5) is circular copper wire woven mesh or soft copper band, and the count of described woven mesh is not less than 85%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420360117.6U CN203982857U (en) | 2014-07-01 | 2014-07-01 | A kind of specified alternating voltage 750V water proof fire retardant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420360117.6U CN203982857U (en) | 2014-07-01 | 2014-07-01 | A kind of specified alternating voltage 750V water proof fire retardant cable |
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| Publication Number | Publication Date |
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| CN203982857U true CN203982857U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420360117.6U Active CN203982857U (en) | 2014-07-01 | 2014-07-01 | A kind of specified alternating voltage 750V water proof fire retardant cable |
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| CN (1) | CN203982857U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111192715A (en) * | 2020-01-02 | 2020-05-22 | 浙江中大元通特种电缆有限公司 | Cable for coal mine and preparation method thereof |
-
2014
- 2014-07-01 CN CN201420360117.6U patent/CN203982857U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111192715A (en) * | 2020-01-02 | 2020-05-22 | 浙江中大元通特种电缆有限公司 | Cable for coal mine and preparation method thereof |
| CN111192715B (en) * | 2020-01-02 | 2021-04-27 | 浙江中大元通特种电缆有限公司 | Cable for coal mine and preparation method thereof |
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