CN202796133U - Novel intrinsic safety type instrument cable - Google Patents
Novel intrinsic safety type instrument cable Download PDFInfo
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- CN202796133U CN202796133U CN 201220423386 CN201220423386U CN202796133U CN 202796133 U CN202796133 U CN 202796133U CN 201220423386 CN201220423386 CN 201220423386 CN 201220423386 U CN201220423386 U CN 201220423386U CN 202796133 U CN202796133 U CN 202796133U
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Abstract
The utility model discloses a novel intrinsic safety type instrument cable. An insulating cable core is composed of a conductor and an insulating layer from inside to outside, wherein the insulating cable core is a cable group unit consisting of two cable groups or three cable groups in a pair twist mode, a wrapping band layer and a sub-shielding layer are arranged outside the cable group unit, then the cable group unit is twisted again to form the cable, a filling layer is arranged between the cable cores, and the wrapping band layer, a main shielding layer, the wrapping band layer and an outer sheath layer are sequentially arranged outward. The novel intrinsic safety type instrument cable has high environment-friendly performance and high fireproof performance and has a low-capacitance low-inductance stable signal transmission function.
Description
Technical field
The utility model belongs to the electric wire field, relates to a kind of novel intrinsic safety type instrument cable.
Background technology
The signal transmission of present distributing system in industrial and mining enterprises such as electric power, metallurgy, chemical industry, electronic computer system, automated system and detecting instrument, instrument etc. connect with common intrinsically-safe instrument cable, basically adopt traditional polyethylene insulation or polyvinyl chloride insulation shield type intrinsically-safe instrument cable.This cable has the polyethylene of the superior electrical performances such as dielectric constant is little, dielectric loss is little, insulation resistance is large as insulating material, so cable has low electric capacity, inductance and stablizes good transmission performance because of employing.But along with some problems that are widely used of this cable also occur thereupon, it mainly is the occasion that has the flame-retardant performance at the ask for something cable, because polythene material is adopted in the insulation of this cable, but polythene material is combustible material, so the flame-retardant performance of cable does not often reach requirement, the potential safety hazard when causing these occasions of cable to be used increases.Adopt the flame-proof polyvinyl chloride material, but because pvc material is the fire resistance material that contains halogen, in case when fire occured, cable is burned can to produce a large amount of smog, and also has halogen-containing poisonous corrosive gas to disengage.So not only be unfavorable for the expansion of rescue work, and halogen-containing toxic gas causes serious actual bodily harm to trapped personnel.Generally there is accurate instrument and equipment the application scenario of intrinsic safety type instrument cable in addition, and these corrosive gass that contain halogen can cause serious sour corrosion to equipment, so that the performance of whole cable does not reach requirement.
The utility model content
For overcoming above-mentioned deficiency, the utility model cable uses the problem that exists at the dangerous situation that some have fire to occur, provide a kind of and have high-environmental performance and high fire protecting performance, and have the novel intrinsic safety type instrument cable of the stabilization signal transfer function of low electric capacity, low inductance.
Scheme of the present utility model is as follows: a kind of novel intrinsic safety type instrument cable, its insulated wire cores from-inner-to-outer is made of conductor, insulating barrier, insulated wire cores forms line group unit by two line groups or three line group pair twists, online group unit is outside equipped with belting layer and sub-shield, then line group unit twisted synthesizing cable again, and packed layer is set between cable core, form to being outside equipped with belting layer, total screen, belting layer and external sheath layer successively.
Described exhausted conductor adopts the 5th the class flexible conductor is stranded to be made.
Described insulating barrier adopts the ceramic silastic material to extrude and makes.
Described packed layer (5) material is the low smoke, zero halogen glass fiber rope.
Described belting layer (6) and belting layer material are the LSOH anti-flaming glass fibre belt.
Described restrictive coating adopts the ceramic silastic material to extrude and makes.
The beneficial effects of the utility model:
1, the insulating material of cable adopts new ceramics SiClx rubber-covered material, and this material is a kind of organosilicon macromolecule composite material.This material is compared with common polythene, electric property is more or less the same, and guarantees that cable has stable signal transfer functions, and is superior at the flame-retardant aspect of performance, at normal temperatures, the characteristic that has possessed silicon rubber after running into 430 ℃ of flame combustions, can form the barrier layer of the hard similar ceramic-like of one deck, can intercept the burning of flame, so the flame-retardant performance is improved, and the amount of being fuming is low when burning, disengages without the corrosive gas that contains halogen.
2, the sheath material of cable adopts ceramic silicone rubber jacket material equally.This material composition is equal to the various compositions of Insulation Material, has taken into full account the Halogen of cable, low cigarette, fire resistance.Not only have good fire resistance, and when burning the amount of being fuming low, on every side personnel and equipment without illeffects.
3, the auxiliary packing material of cable and band material are to adopt halogen-free flameproof glass fiber material, not only have good fire resistance, and all are not halogen-containing environment-friendly materials.The utility model provides a kind of novel computer and instrument cable that high flame retardant, Halogen, low cigarette environmental-protecting performance have the signal transfer functions of the low inductance stabilization of low electric capacity simultaneously that have.The fire resistance of cable reaches the burning test of GB/T19216 regulation, the low smoke performance of cable is according to the experimental condition of GB/T17651 regulation, and its light transmittance is not less than 60%, and the Halogen performance of cable is according to the experimental condition of GB/T17650, the PH value is greater than 4.3, and conductance is less than 10 μ s/mm.Be not more than 90pF/m during the mutual capacitance 1kHZ of cable, the inductance resistance ratio is not more than 35 μ H/ Ω.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
A kind of novel intrinsic safety type instrument cable, the insulated wire cores from-inner-to-outer is made of conductor 1, insulating barrier 2, insulated wire cores forms line group unit by two line groups or three line group pair twists, online group unit is outside equipped with belting layer 3 and sub-shield 4, then line group unit twisted synthesizing cable again, and packed layer 5 is set between cable core, form to being outside equipped with belting layer 6, total screen 7, belting layer 8 and external sheath layer 9 successively.
Shown in Figure 1, the described a kind of novel intrinsic safety type instrument cable of present embodiment, conductor 1 adopts the multiply soft copper tow compositing conducting core of the 5th class formation, the following step of conductor production process: wire drawing-annealing-synnema, the form that conductor adopts bundle to close, wherein 1mm
2 The monofilament maximum gauge is as 0.21mm in the lower conductor, 1.5-2.5 mm
2 The monofilament maximum gauge is 0.26mm in the conductor.Insulating barrier 2 adopts ceramic silicon rubber insulation material, and its production process is finished at SJ85 or the production of SJ115 extruder, adopts plsitive mold to extrude, and drying tunnel temperature is controlled at 170 ℃-280 ℃.Belting layer 3 adopts the halogen-free flame-retardant glass fiber band, and production form adopts overlapping wrapped, and the rate of putting up is not less than 15%, and Main Function is tightened the twisted pair wire group.The production process of proof copper-wire braided sub-shield 4 is finished at 16 ingot braiding machines, and the braiding angle general control is controlled at count more than 80% by regulating braiding angle or lay of braiding between 30～60 degree.Packed layer 5 adopts the halogen-free flame-retardant glass towline, and Main Function guarantees fire resistance and the rounding property of cable.Belting layer 6 adopts the halogen-free flame-retardant glass fiber band, and production form adopts overlapping wrapped, and the rate of putting up is not less than 15%, and Main Function is tightened becoming cable core.The production process of the total screen 7 of proof copper-wire braided is finished at braiding machine, wherein the core external diameter is generally finished at 16 ingot braiding machines below 6.5mm before the braiding, diameter is generally finished at 24 ingot braiding machines more than 6.5～22.0mm, and diameter is generally finished at 32 or 36 ingot braiding machines more than 22.0mm.The braiding angle general control is controlled at count more than 80% by regulating braiding angle or lay of braiding between 30～60 degree.Belting layer 8 adopts the halogen-free flame-retardant glass fiber band, and production form adopts overlapping wrapped, and the rate of putting up is not less than 15%, the total shielding of Main Function isolation and outer jacket.Restrictive coating 9 adopts ceramic silicone rubber jacket layer, also adopts plsitive mold to extrude, and drying tunnel temperature is controlled at 170 ℃-280 ℃.Production equipment can adopt different sheathing machines to produce according to the size of the outside diameter of cable: the use XJ85 extruder of external diameter below 15mm, the use XJ115 extruder of external diameter more than 15mm.
Although above embodiment of the present utility model has been given to describe in detail and explanation; but what should indicate is; we can carry out various equivalences to above-mentioned execution mode according to conception of the present utility model and change and modification; when its function that produces does not exceed spiritual that specification and accompanying drawing contain yet, all should be within protection range of the present utility model.
Claims (6)
1. novel intrinsic safety type instrument cable, it is characterized in that: the insulated wire cores from-inner-to-outer is made of conductor, insulating barrier, insulated wire cores forms line group unit by two line groups or three line group pair twists, online group unit is outside equipped with belting layer and sub-shield, then line group unit twisted synthesizing cable again, and packed layer is set between cable core, form to being outside equipped with belting layer, total screen, belting layer and external sheath layer successively.
2. a kind of novel intrinsic safety type instrument cable according to claim 1 is characterized in that, described exhausted conductor adopts the 5th the class flexible conductor is stranded to be made.
3. a kind of novel intrinsic safety type instrument cable according to claim 1 is characterized in that, described insulating barrier adopts the ceramic silastic material to extrude and makes.
4. a kind of novel intrinsic safety type instrument cable according to claim 1 is characterized in that described packed layer material is the low smoke, zero halogen glass fiber rope.
5. a kind of novel intrinsic safety type instrument cable according to claim 1 is characterized in that described belting layer and belting layer material are the LSOH anti-flaming glass fibre belt.
6. a kind of novel intrinsic safety type instrument cable according to claim 1 is characterized in that, described restrictive coating adopts the ceramic silastic material to extrude and makes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220423386 CN202796133U (en) | 2012-08-24 | 2012-08-24 | Novel intrinsic safety type instrument cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220423386 CN202796133U (en) | 2012-08-24 | 2012-08-24 | Novel intrinsic safety type instrument cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202796133U true CN202796133U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220423386 Expired - Fee Related CN202796133U (en) | 2012-08-24 | 2012-08-24 | Novel intrinsic safety type instrument cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN202796133U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345964A (en) * | 2013-07-01 | 2013-10-09 | 安徽虹都电缆集团有限公司 | Industrial heat-resisting fireproofing instrument cable and manufacturing technology thereof |
| CN103903790A (en) * | 2014-03-06 | 2014-07-02 | 安徽华星电缆集团有限公司 | Fireproof controlling cable |
| CN103903764A (en) * | 2014-03-06 | 2014-07-02 | 安徽华星电缆集团有限公司 | Silicone rubber instrument cable |
| CN103903689A (en) * | 2014-03-06 | 2014-07-02 | 安徽华星电缆集团有限公司 | Environment-friendly intrinsic safety type instrument cable |
-
2012
- 2012-08-24 CN CN 201220423386 patent/CN202796133U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345964A (en) * | 2013-07-01 | 2013-10-09 | 安徽虹都电缆集团有限公司 | Industrial heat-resisting fireproofing instrument cable and manufacturing technology thereof |
| CN103345964B (en) * | 2013-07-01 | 2015-08-05 | 安徽虹都电缆集团有限公司 | A kind of industrial heat resistant fire-proof instrument cable and preparation technology thereof |
| CN103903790A (en) * | 2014-03-06 | 2014-07-02 | 安徽华星电缆集团有限公司 | Fireproof controlling cable |
| CN103903764A (en) * | 2014-03-06 | 2014-07-02 | 安徽华星电缆集团有限公司 | Silicone rubber instrument cable |
| CN103903689A (en) * | 2014-03-06 | 2014-07-02 | 安徽华星电缆集团有限公司 | Environment-friendly intrinsic safety type instrument cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20130824 |