CN204229875U - Flat type compensating wire - Google Patents
Flat type compensating wire Download PDFInfo
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- CN204229875U CN204229875U CN201420507328.8U CN201420507328U CN204229875U CN 204229875 U CN204229875 U CN 204229875U CN 201420507328 U CN201420507328 U CN 201420507328U CN 204229875 U CN204229875 U CN 204229875U
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- flat type
- wire
- type compensating
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- oversheath
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Abstract
The utility model relates to a kind of flat type compensating cable.Technical solutions of the utility model: flat type compensating wire, it includes two cores (6), every root core (6) is made up of B alloy wire conductor (1) and the insulating barrier (2) be coated on B alloy wire conductor (1), wherein: described two cores (6) are horizontally disposed with, described two cores (6) outer cladding polyester layer (3), polyester layer (3) establishes metal screen layer (4) and oversheath (5) outward successively.After adopting technique scheme, the utility model electric capacity is little, inductance is low, advantages of good shielding performance, corrosion resistance are strong.
Description
Technical field
The utility model relates to a kind of flat type compensating cable, and particularly intrinsic safety type flat cable, belongs to field of cable technology.
Background technology
Compensating wire is used to a kind of wire of the error that Compensative thermoelectric couple and connecting position of wires produce because of variation of ambient temperature, for connecting thermocouple and measurement mechanism.Along with the continuous expansion of the scope of application, compensating wire uses containing in sexual mixture ambient through oil of being everlasting, chemical industry, weaving and colliery etc.These occasions require to use essential safety source circuit usually, no matter power circuit is inner and lead-out wire is normally working or is being all safe under nonserviceabling, the electric spark produced can not light the sexual mixture in surrounding environment.Common compensating wire uses in this sexual mixture ambient, and the performance of its explosion-proof, corrosion resistance, shielding properties aspect is not be satisfied with very much, so need carry out certain technical improvement to common compensating wire.
Separately, the capacitance equation of unit length between two wires: C=q/u=a/Uab=π ε/ln (d/r).
Can be found out by above formula, wire pitch is larger, and electric capacity is less, and wire is thinner, and electric capacity is also less.
Summary of the invention
The purpose of this utility model is to provide a kind of flat type compensating wire, and its electric capacity is little, inductance is low, advantages of good shielding performance, corrosion resistance are strong.
For realizing above-mentioned technical purpose, the utility model is by the following technical solutions: a kind of flat type compensating wire, it includes two cores, every root core is made up of B alloy wire conductor and the insulating barrier be coated on B alloy wire conductor, wherein: described two cores are horizontally disposed with, described two core outer cladding polyester layers, polyester layer establishes metal screen layer and oversheath outward successively.
Further, described insulating barrier is polyvinyl chloride insulation layer, and polyvinyl chloride insulation layer nominal thickness is 0.5mm or 0.7mm.
Further, described polyester layer nominal thickness is 0.04mm.
Further, described metal screen layer is proof copper-wire braided screen, and the copper wire nominal diameter of proof copper-wire braided screen is 0.15mm.
Further, described oversheath is modified polyvinyl chloride oversheath, modified polyvinyl chloride oversheath nominal thickness 1.2mm.
After adopting technique scheme, the utility model has following beneficial effect:
Adopt flat version, under equal conditions, make wire pitch become large, make that whole lead capacitance is little, inductance is low; The proof copper-wire braided screen of core outer cladding metal screen layer, particularly specific thickness, improves the shielding properties of wire; The modified polyvinyl chloride oversheath of specific thicknesses, improves the rotproofness of wire, fire resistance, resistance to mineral oil performance and environmental suitability.The wire of said structure is used to can be used for the industrial department temp measuring system of the explosive atmospheres such as chemistry and oil.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, B alloy wire conductor, 2, insulating barrier, 3, polyester layer, 4, metal screen layer, 5, oversheath, 6, core.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Embodiment
As shown in Figure 1, a kind of flat type compensating wire, it includes two cores 6, every root core 6 is made up of B alloy wire conductor 1 and the insulating barrier 2 be coated on B alloy wire conductor 1, two cores 6 are horizontally disposed with, two core 6 outer cladding polyester layers 3, polyester layer 3 peripheral hardware metal screen layer 4, extrudes oversheath 5 outside metal screen layer 4.
Adopt after said structure, under equal conditions, make wire pitch become large, make that whole lead capacitance is little, inductance is low; The setting of metal screen layer, improves the shield effectiveness of wire.
In actual use procedure, for making best results, inventor proposes further on aforementioned base: aforementioned dielectric layer 2 is polyvinyl chloride insulation layer preferably, and insulating barrier 2 nominal thickness is 0.5mm or 0.7mm.Previous polyesters layer 3 preferred nominal thickness is 0.04mm.Aforementioned metal screen 4 is copper wire woven shield preferably, and the copper wire nominal diameter of aforementioned metal screen 4 is 0.15mm.Aforementioned oversheath 5 is modified polyvinyl chloride oversheath preferably, and aforementioned oversheath 5 nominal thickness 1.2mm.
The utility model is not limited to above-described embodiment, and the technical scheme that all employings are equal to or equivalence replacement is formed all falls into the protection range that the utility model requires.
Claims (5)
1. a flat type compensating wire, it includes two cores (6), every root core (6) is made up of B alloy wire conductor (1) and the insulating barrier (2) be coated on B alloy wire conductor (1), it is characterized in that: described two cores (6) are horizontally disposed with, described two cores (6) outer cladding polyester layer (3), polyester layer (3) establishes metal screen layer (4) and oversheath (5) outward successively, and metal screen layer (4) is proof copper-wire braided screen.
2. flat type compensating wire according to claim 1, is characterized in that: described insulating barrier (2) is polyvinyl chloride insulation layer, and polyvinyl chloride insulation layer nominal thickness is 0.5mm or 0.7mm.
3. flat type compensating wire according to claim 1, is characterized in that: described polyester layer (3) nominal thickness is 0.04mm.
4. flat type compensating wire according to claim 1, is characterized in that: the copper wire nominal diameter of described proof copper-wire braided screen is 0.15mm.
5. flat type compensating wire according to claim 1, is characterized in that: described oversheath (5) is modified polyvinyl chloride oversheath, modified polyvinyl chloride oversheath nominal thickness 1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420507328.8U CN204229875U (en) | 2014-09-03 | 2014-09-03 | Flat type compensating wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420507328.8U CN204229875U (en) | 2014-09-03 | 2014-09-03 | Flat type compensating wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204229875U true CN204229875U (en) | 2015-03-25 |
Family
ID=52927942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420507328.8U Active CN204229875U (en) | 2014-09-03 | 2014-09-03 | Flat type compensating wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204229875U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108376580A (en) * | 2018-04-23 | 2018-08-07 | 东莞金信诺电子有限公司 | A kind of low-loss high-speed cable and flat type cable |
-
2014
- 2014-09-03 CN CN201420507328.8U patent/CN204229875U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108376580A (en) * | 2018-04-23 | 2018-08-07 | 东莞金信诺电子有限公司 | A kind of low-loss high-speed cable and flat type cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |