CN105469866A - Novel intrinsic safety type instrument cable - Google Patents
Novel intrinsic safety type instrument cable Download PDFInfo
- Publication number
- CN105469866A CN105469866A CN201510901885.7A CN201510901885A CN105469866A CN 105469866 A CN105469866 A CN 105469866A CN 201510901885 A CN201510901885 A CN 201510901885A CN 105469866 A CN105469866 A CN 105469866A
- Authority
- CN
- China
- Prior art keywords
- cable
- intrinsic safety
- safety type
- type instrument
- instrument cable
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- 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
- H01B7/02—Disposition of insulation
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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
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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
Landscapes
- Insulated Conductors (AREA)
Abstract
The invention discloses a novel intrinsic safety type instrument cable. The instrument cable is characterized in that insulation wire cores are composed of conductors and insulation layers from inside to outside; the insulation layers are twisted in pairs to form twisted-pair units; the twisted-pair units form a cable core; and an outer layer of the cable core is provided with a wrapping tape layer, a filling layer and a sheath layer in sequence from inside to outside. The insulation layers are radiation-resistant cross-linked polyolefin composite insulation layers. The instrument cable has the advantages that due to selected materials, the cable has good flame-retardant performance and is ensured to have a stable signal transmission function.
Description
Technical field
The invention belongs to electric wire, field of cable technology, be specifically related to a kind of novel intrinsic safety type instrument cable.
Background technology
Cable is made up of the conductor of one or more mutually insulated and outsourcing insulating protective layer; electric power or information are transferred to the wire at another place or cable normally by the cable of several or the stranded similar rope of several groups of wires (often organizing at least two) from one; often organize mutually insulated between wire; and be often twisted into round a center, whole outside is surrounded by the cover layer of high-insulation.Cable has interior energising, the feature of external insulation.Common cable classification has: cable has power cable, control cables, compensating cable, shielded type cable, high-temperature cable, computer cable, signal cable, coaxial cable, fire-resisting cable, shipboard cable, mining cable, aluminium alloy cable etc.They are all made up of sub-thread or stranded conductor and insulating barrier, are used for connecting circuit, electrical equipment etc.The Signal transmissions of the current distributing system in enterprises such as electric power, metallurgy, chemical industry, electronic computer system, automated system and detecting instrument, instrument etc. connect the intrinsically-safe instrument cable for connecting, substantially traditional polyethylene insulation or polyvinyl chloride insulation shield type intrinsically-safe instrument cable is adopted, this cable is little because employing has dielectric constant, the polyethylene insulation material of the superior electrical performances such as dielectric loss is little, and insulation resistance is large.But, along with the universalness used, there is an important problem, not fire-resistant, there is the hidden danger in safety.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, now provide a kind of fire resistance good, and there is the novel intrinsic safety type of stabilization signal transmittability of low electric capacity, low inductance
Instrument cable.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of novel intrinsic safety type instrument cable, its innovative point is: insulated wire cores from-inner-to-outer is made up of conductor and insulating barrier, described insulating barrier is according to two line pair twist composition pair twist unit, multiple pair twist unit constitutes cable core, and described cable core skin is from inside to outside disposed with belting layer, packed layer and restrictive coating.Described insulating barrier is that radiation hardness is according to cross-linked polyolefin composite bed insulating barrier.
Further, described packed layer adopts black halogen-free, high flame retardant, radiation hardness material is seamless, and high pressure extrudes filling.
Further, described belting layer adopts LSOH anti-flaming glass fibre belt.
Further, described restrictive coating employing Ceramic silicon rubber material extrudes and makes.
Beneficial effect of the present invention is as follows: the selection of material of the present invention, makes cable have good fire resistance, ensures that cable has stable signal transfer functions.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this specification can understand other advantages of the present invention and effect easily.
Be illustrated in figure 1 structural representation of the present invention, a kind of novel intrinsic safety type instrument cable, insulated wire cores from-inner-to-outer is made up of conductor 3 and insulating barrier 2, insulating barrier 2 is according to two line pair twist composition pair twist unit 1, multiple pair twist unit 1 constitutes cable core 4, and cable core 4 skin is from inside to outside disposed with belting layer 5, packed layer 6 and restrictive coating 7.Insulating barrier 2 is for radiation hardness is according to cross-linked polyolefin composite bed insulating barrier.
Packed layer 6 adopts black halogen-free, high flame retardant, radiation hardness material is seamless, and high pressure extrudes filling; Belting layer 5 adopts LSOH anti-flaming glass fibre belt; Restrictive coating 7 adopts Ceramic silicon rubber material to extrude and makes.
The selection of material of the present invention, makes cable have good fire resistance, ensures that cable has stable signal transfer functions.
Above-described embodiment is preferred embodiment of the present invention; it is not the restriction to technical solution of the present invention; as long as without the technical scheme that creative work can realize on the basis of above-described embodiment, all should be considered as falling within the scope of the rights protection of patent of the present invention.
Claims (4)
1. a novel intrinsic safety type instrument cable, it is characterized in that: insulated wire cores from-inner-to-outer is made up of conductor and insulating barrier, described insulating barrier is according to two line pair twist composition pair twist unit, multiple pair twist unit constitutes cable core, and described cable core skin is from inside to outside disposed with belting layer, packed layer and restrictive coating.Described insulating barrier is that radiation hardness is according to cross-linked polyolefin composite bed insulating barrier.
2. the novel intrinsic safety type instrument cable of one according to claim 1, is characterized in that: described packed layer adopts black halogen-free, high flame retardant, radiation hardness material is seamless, and high pressure extrudes filling.
3. the novel intrinsic safety type instrument cable of one according to claim 1, is characterized in that: described belting layer adopts LSOH anti-flaming glass fibre belt.
4. the novel intrinsic safety type instrument cable of one according to claim 1, is characterized in that: described restrictive coating adopts Ceramic silicon rubber material to extrude and makes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510901885.7A CN105469866A (en) | 2015-12-09 | 2015-12-09 | Novel intrinsic safety type instrument cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510901885.7A CN105469866A (en) | 2015-12-09 | 2015-12-09 | Novel intrinsic safety type instrument cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105469866A true CN105469866A (en) | 2016-04-06 |
Family
ID=55607480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510901885.7A Pending CN105469866A (en) | 2015-12-09 | 2015-12-09 | Novel intrinsic safety type instrument cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105469866A (en) |
-
2015
- 2015-12-09 CN CN201510901885.7A patent/CN105469866A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160406 |