CN105810350A - Self-bearing fire-resistant and flame-retardant coaxial high-voltage cable - Google Patents
Self-bearing fire-resistant and flame-retardant coaxial high-voltage cable Download PDFInfo
- Publication number
- CN105810350A CN105810350A CN201610396410.1A CN201610396410A CN105810350A CN 105810350 A CN105810350 A CN 105810350A CN 201610396410 A CN201610396410 A CN 201610396410A CN 105810350 A CN105810350 A CN 105810350A
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- China
- Prior art keywords
- flame retardant
- cable
- outer conductor
- fire
- conductor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
- H01B7/225—Longitudinally placed metal wires or tapes forming part of an outer sheath
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/04—Concentric cables
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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
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- Insulated Conductors (AREA)
Abstract
The invention discloses a self-bearing fire-resistant and flame-retardant coaxial high-voltage cable. The cable comprises an inner conductor and an outer conductor concentric with the inner conductor, wherein a first fire-resistant layer and a metal compression-resistance pipe are arranged sequentially between the inner conductor and the outer conductor; a metal conductive tube is disposed outside the outer conductor; a second fire-resistant layer is arranged outside the metal conductive tube; an embossed alloy composite aluminum-plastics tape is disposed outside the second fire-resistant layer; an outer sheath is arranged outside the embossed alloy composite aluminum-plastics tape; a carrying core is arranged in the inner axis of the inner conductor in a concentric mode; and the outer conductor is formed by combining aluminum alloy conductors with the same size and number with carrying cores alternatively. The cable is of a fully symmetrical structure on the whole, the inner conductor and the outer conductor are concentric with each other, and electromagnetic energy propagation is limited in mediums between the inner conductor and the outer conductor, thus low attenuation and high shielding properties are achieved. Compared with the prior art, new strengthening structures are not added, and the cable is simple in structure, has a small outside diameter, and is convenient to lay.
Description
Technical field
The present invention relates to electric wire field, be specifically related to a kind of from carrying fire resistant flame retardant coaxial high pressure cable.
Background technology
Along with taking place frequently of fire incident, electric wire fire risk understanding is constantly deepened by people, and relevant department is also more and more higher to the requirement of the performances such as electric wire fire protection flame retarding.Spread fast, difficulty of putting out a fire to save life and property owing to cable fire has, produce secondary harm, recovery time the feature such as length can bring huge loss to the lives and properties of national economy and the people.Therefore fire-retardant, fire performance, the security reliability of electric wire are proposed harsher service condition by people.As strong in fire prevention, explosion-proof, overload capacity, long service life, the particular/special requirements such as under Fire Conditions, it is properly functioning that Fire lift, fire pump need to keep in certain time, and cable is low-smoke low-halogen low toxicity after combustion, and even smokeless halogen-free is nontoxic.Cable-flame retardant, fire prevention measure are to reduce ignition of cable to prolong the important means of combustion, and key is being relied mainly on prevention, and all kinds of flame retardant cables, fire-resisting cable, fireproof cable are used widely.
Any material occurs burning all must possess three below condition: combustible, oxidant and temperature (ignition source).The oxygen contained in air is a kind of oxidant, therefore, in Cable Construction Design, reducing gap between cable is a kind of conventional method with this existence reducing air, therefore, glass cord, glass fiber tape, mica tape, asbestos cord etc. are fire-retardant or the method for refractory material frequently with arranging between each structure of cable for prior art, can improve fire-retardant, the fire resistance of cable.This method one is fire-retardant in a large number or the use of refractory material can increase production cost, and two is fire-retardant or the performance of refractory material own is unreliable or human body is had injury.
Coaxial cable is made up of inner conductor layer, insulating barrier, outer conductor layer and restrictive coating, inner conductor layer and the usual cross section of outer conductor layer are only small, from carrying poor performance, especially when cable uses under not buried operating mode, owing to load-carrying properties are poor, cable own wt can make cable conductor break, and is also easily damaging tiny cable conductor when construction simultaneously.Prior art dish adopts bracing frame that cable is supported; coaxial cable is protected by increasing the form of bracing frame; there is certain effect; but add laid down cost and time; in addition the load-carrying properties of cable own are poor, unavoidably can because operation causes the problem that the core of cable damages accidentally in work progress.
Summary of the invention
In order to overcome the deficiencies in the prior art, it is provided that a kind of have very strong carrying and tensile property certainly, resistance to compression, fire-resistant carrying fire resistant flame retardant coaxial high pressure cable certainly.
For achieving the above object, the invention discloses a kind of from carrying fire resistant flame retardant coaxial high pressure cable, including inner wire and the outer conductor that is arranged concentrically with inner wire, between inner wire and outer conductor, be sequentially provided with the first flame retardant coating and metal compression tube；It is externally provided with metal guide fulgurite at outer conductor, is externally provided with the second flame retardant coating at metal guide fulgurite, be externally provided with embossing alloy aluminum plastic composite strip at the second flame retardant coating, be externally provided with oversheath at embossing alloy aluminum plastic composite strip；Described inner wire inner axes is arranged concentrically carrying core, and described outer conductor is formed by size, the same number of aluminium alloy conductor and carrying core alternate combinations.
Preferably, described carrying core is zinc-coated wire.
Preferably, described inner wire is tubular copper conductors.
Preferably, described metal guide fulgurite is embossing pipe.
Preferably, the first described flame retardant coating is fire resistant flame retardant band.
Preferably, the second described flame retardant coating has three-decker, and intermediate layer is glass fibre belt, and internal layer is alumina silicate fibre layer, and outer layer is inhibiting tape.
The beneficial effects of the present invention is:
1, the present invention has that very strong the stress point of inner wire concentrates on center carrying core from load-carrying properties, the conductor center layer You Yigen center carrying core of cable, and cable, in folding and unfolding winding process, protects inner wire annealing copper wire, and is not easily broken；Outer conductor adopts conductor to be arranged alternately with carrying core simultaneously, improves the overall pull resistance of cable；
2, metal compression tube compressive property is good, and moistureproof and good airproof performance, embossing can improve its bending property；
3, cable entirety is full symmetrical configuration, and inner and outer conductor is in concentric position, and electromagnetic energy is confined to the media between internal and external conductor, therefore has decay little, and shielding properties is high；Compared with prior art not increasing new reinforcement structure, the construction of cable is simple, and the outside diameter of cable is less, conveniently lays；
4, cable adopts double-deck fireproof construction, and second layer flame retardant coating has three-decker, and every layer all has fire resistance, is equivalent to the fire resistance of cable is improve 4 times, and the fire resistance of the cable made is good, thus also improving the properties of cable.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the second fire-resistant layer structure schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, it is further elucidated with the present invention, it should be understood that these embodiments are merely to illustrate the present invention rather than restriction the scope of the present invention, after having read the present invention, the amendment of the various equivalent form of values of the present invention is all fallen within the application claims limited range by those skilled in the art.
As shown in Figure 1, the present invention provides a kind of from carrying fire resistant flame retardant coaxial high pressure cable, including inner wire 2 and the outer conductor that is arranged concentrically with inner wire, the first flame retardant coating 3 and metal compression tube 4 it is sequentially provided with between inner wire and outer conductor, the compressive property making cable is good, protection against the tide and good airproof performance, embossing can improve its bending property；It is externally provided with metal guide fulgurite 5 at outer conductor, is externally provided with the second flame retardant coating 6 at metal guide fulgurite 5, be externally provided with embossing alloy aluminum plastic composite strip 7 at the second flame retardant coating, be externally provided with oversheath 8 at embossing alloy aluminum plastic composite strip；Described inner wire inner axes is arranged concentrically carrying core 1, and described outer conductor is formed by size, the same number of aluminium alloy conductor 9 and carrying core 1 alternate combinations；The stress point of inner wire concentrates on center carrying core, and cable, in folding and unfolding winding process, protects inner wire annealing copper wire, and is not easily broken；Outer conductor adopts conductor to be arranged alternately with carrying core simultaneously, improves the overall pull resistance of cable.
As in figure 2 it is shown, the second described flame retardant coating 6 has three-decker, intermediate layer is glass fibre belt 61, and internal layer is alumina silicate fibre layer 62, and outer layer is fire-retardant belt 63, and this three-decker is bonded together by binding agent from each other；Wherein, alumina silicate fibre is a kind of high-temperature fibre, has that unit weight is light, high temperature resistant, Heat stability is good, pyroconductivity are low, resistance to mechanical vibrations, high resilience, sound insulation, electric insulation and a feature such as chemical stability is good.
The above is only the preferred embodiment of the present invention, it is noted that for the person of ordinary skill of the art, under the premise without departing from the principles of the invention, it is also possible to make some modification and improvement, and these also should be regarded as belonging to protection scope of the present invention.
Claims (5)
1. one kind carries fire resistant flame retardant coaxial high pressure cable certainly, it is characterised in that: include inner wire and the outer conductor being arranged concentrically with inner wire, between inner wire and outer conductor, be sequentially provided with the first flame retardant coating and metal compression tube；It is externally provided with metal guide fulgurite at outer conductor, is externally provided with the second flame retardant coating at metal guide fulgurite, be externally provided with embossing alloy aluminum plastic composite strip at the second flame retardant coating, be externally provided with oversheath at embossing alloy aluminum plastic composite strip；Described inner wire inner axes is arranged concentrically carrying core, and described outer conductor is formed by size, the same number of aluminium alloy conductor and carrying core alternate combinations.
2. according to claim 1 from carrying fire resistant flame retardant coaxial high pressure cable, it is characterised in that: described carrying core is zinc-coated wire.
3. according to claim 1 from carrying fire resistant flame retardant coaxial high pressure cable, it is characterised in that: described inner wire is tubular copper conductors.
4. according to claim 1 from carrying fire resistant flame retardant coaxial high pressure cable, it is characterised in that: the first described flame retardant coating is fire resistant flame retardant band.
5. according to claim 1 from carrying fire resistant flame retardant coaxial high pressure cable, it is characterised in that: the second described flame retardant coating has three-decker, and intermediate layer is glass fibre belt, and internal layer is alumina silicate fibre layer, and outer layer is fire-retardant belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610396410.1A CN105810350A (en) | 2016-06-07 | 2016-06-07 | Self-bearing fire-resistant and flame-retardant coaxial high-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610396410.1A CN105810350A (en) | 2016-06-07 | 2016-06-07 | Self-bearing fire-resistant and flame-retardant coaxial high-voltage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105810350A true CN105810350A (en) | 2016-07-27 |
Family
ID=56427931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610396410.1A Pending CN105810350A (en) | 2016-06-07 | 2016-06-07 | Self-bearing fire-resistant and flame-retardant coaxial high-voltage cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105810350A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102637478A (en) * | 2012-05-04 | 2012-08-15 | 无锡市恒汇电缆有限公司 | Fire-resistant inflaming retarding high-voltage cable |
| CN105336439A (en) * | 2015-12-08 | 2016-02-17 | 无锡江南电缆有限公司 | Self-bearing tensile-type high-power coaxial cable |
| CN105355304A (en) * | 2015-12-08 | 2016-02-24 | 无锡江南电缆有限公司 | Self-bearing anti-compression large power coaxial composite cable |
| CN105405508A (en) * | 2015-12-08 | 2016-03-16 | 江苏荣宜电缆有限公司 | Reinforced aluminium alloy compressive cable |
| CN105427934A (en) * | 2015-12-08 | 2016-03-23 | 无锡江南电缆有限公司 | Self-bearing tensile high-power coaxial composite cable |
| CN205827996U (en) * | 2016-06-07 | 2016-12-21 | 无锡市恒汇电缆有限公司 | A kind of from carrying fire resistant flame retardant coaxial high pressure cable |
-
2016
- 2016-06-07 CN CN201610396410.1A patent/CN105810350A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102637478A (en) * | 2012-05-04 | 2012-08-15 | 无锡市恒汇电缆有限公司 | Fire-resistant inflaming retarding high-voltage cable |
| CN105336439A (en) * | 2015-12-08 | 2016-02-17 | 无锡江南电缆有限公司 | Self-bearing tensile-type high-power coaxial cable |
| CN105355304A (en) * | 2015-12-08 | 2016-02-24 | 无锡江南电缆有限公司 | Self-bearing anti-compression large power coaxial composite cable |
| CN105405508A (en) * | 2015-12-08 | 2016-03-16 | 江苏荣宜电缆有限公司 | Reinforced aluminium alloy compressive cable |
| CN105427934A (en) * | 2015-12-08 | 2016-03-23 | 无锡江南电缆有限公司 | Self-bearing tensile high-power coaxial composite cable |
| CN205827996U (en) * | 2016-06-07 | 2016-12-21 | 无锡市恒汇电缆有限公司 | A kind of from carrying fire resistant flame retardant coaxial high pressure cable |
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Application publication date: 20160727 |
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