CN205194406U - This ampere of computer shielded cable - Google Patents
This ampere of computer shielded cable Download PDFInfo
- Publication number
- CN205194406U CN205194406U CN201521018292.8U CN201521018292U CN205194406U CN 205194406 U CN205194406 U CN 205194406U CN 201521018292 U CN201521018292 U CN 201521018292U CN 205194406 U CN205194406 U CN 205194406U
- Authority
- CN
- China
- Prior art keywords
- total
- lapping layer
- shielding
- shielded cable
- point
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a this ampere of computer shielded cable, total shielding adopts the metal plastic composite films + wire to weave two -layer shielding structure to every insulation core wire pair all is equipped with the branch shielding layer, and electric the completely cutting off between the shielding is ensured again around package polyester film in total outside of shielding, and all insulation core are provided with total shielding structure after stranding the stranding together, and total shielding structure also adopts plastic -aluminum composite films + copper wire to weave double shielding. The utility model provides a this ampere of computer shielded cable, simple structure, reasonable in design, through total shielding layer with divide the shielding layer all to adopt plastic -aluminum composite films + copper wire to weave two -layer shielding structure, can ensure 100% shielding of cable, make its have excellent shielding property and antistatic, anti -interference ability.
Description
Technical field
The utility model relates to field of cable technology, particularly relates to a kind of intrinsic safety computer shielded cable.
Background technology
In the place containing explosive danger such as petrochemical industry, mine, gas engineering, usually cable is proposed to the requirement of " explosion-proof ".Because electric spark and thermal effect cause the main contributor of explosion hazard gases blast, and consider from system wiring angle, because cable is made up of many distributed capacitance, inductance equal distribution element, make it correspondingly become energy-storage travelling wave tube, therefore in signals transmission, inevitably store certain energy.Once system malfunctions, these energy storage will discharge with the form of electric spark or thermal effect, the fail safe of influential system.Therefore, require that cable has low electric capacity and low inductance, cable itself with electric charge to lack, not easily produce electric spark; Secondly, require that cable has good shielding properties, there is excellent anti-external electromagnetic field interference and do not produce external interference.Characteristic that this just requires that cable has " essential safety ".Essential safety technology is a kind of low-power design technology.Be the main contributor causing explosion hazard gases blast for electric spark and thermal effect, essential safety technology is started with from restriction energy, and the electric spark produced by restriction system and the possible ignition source of thermal effect these two are come explosion-proof.Under normal work and malfunction, when the electric spark of system generation or the energy of thermal effect are less than to a certain degree, system just can not be lighted explosion hazard gases and produce blast, and therefore, essential safety technology is reliable, safe explosion-proof technology.Essential safety technology can be applicable to the systems such as industrial automation instrument control system, Distributed Control System and Programmable Logic Controller well.
Utility model content
For solving the technical problem existed in background technology, the utility model proposes a kind of intrinsic safety computer shielded cable, there is low electric capacity and low inductance, and there is good shielding properties and interference free performance.
A kind of intrinsic safety computer shielded cable that the utility model proposes, comprising: cable core, total lapping layer, total metallo-plastic composite bed, metal knitted total screen, restrictive coating;
Cable core comprises many insulated wire cores, insulated wire cores comprises two wires, first point of lapping layer, sub-shield, second point of lapping layer, two wire pair twists, first point of lapping layer is coated on two wire outsides, sub-shield is coated on first point of lapping layer outside, second point of lapping layer is coated on sub-shield outside, wire comprises the conductor being positioned at middle part and the insulating barrier being coated on conductor outside, many insulated wire cores pair twists and between all insulated wire cores and surrounding be filled with gasket for packing, thus formed there is the cable core of circular cross-section;
Total lapping layer is coated on cable core outside, total metallo-plastic composite bed adopts metallo-plastic laminated film wrapped in total lapping layer outside formation, it is outside that metal knitted total screen is coated on total metallo-plastic composite bed, it is outside that restrictive coating is coated on metal knitted total screen, and the metal material that metal knitted total screen adopts is different from the metal material that metallo-plastic composite bed adopts.
Preferably, total lapping layer, first point of lapping layer, second point of lapping layer all adopt that polyester belt is wrapped to be formed.
Preferably, total metallo-plastic composite bed adopts plastic-aluminum combined Transposed wind to form, and metal knitted total screen adopts the total screen of proof copper-wire braided.
Preferably, the count of the total screen of proof copper-wire braided is greater than 80%.
Preferably, restrictive coating adopts pvc sheath.
Preferably, sub-shield comprises point plastic-aluminum combined layer and is coated on a point proof copper-wire braided sub-shield for plastic-aluminum combined layer outside.
Preferably, the count of proof copper-wire braided sub-shield is greater than 80%.
Preferably, in total lapping layer, be provided with the first drainage thread, in point lapping layer, be provided with the second drainage thread.
Preferably, the first drainage thread and/or the second drainage thread adopt circular copper wire, and its sectional area is more than or equal to 0.2mm
2.
Preferably, insulating barrier adopts insulating material of polyethylene or cross-linked polyethylene insulating material to make.
In the utility model, the intrinsic safety computer shielded cable proposed, total shielding adopts metallo-plastic laminated film+metal wire knitted double-layer shielding structure, and each insulated wire heart yearn is to being equipped with sub-shield, total shielding outside wrapped polyester film again, guarantee the electrical isolation between shielding, all insulated wire cores are provided with total shielding construction after twisted synthesizing cable together, and total shielding construction also adopts plastic-aluminum combined film+proof copper-wire braided double layer screen.By the intrinsic safety computer shielded cable of above-mentioned optimal design, structure is simple, reasonable in design, plastic-aluminum combined film+proof copper-wire braided double-layer shielding structure is all adopted by total screen and sub-shield, the shielding of 100% of cable can be guaranteed, make it have excellent shielding properties and antistatic, interference free performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of intrinsic safety computer shielded cable that the utility model proposes.
Embodiment
As shown in Figure 1, Fig. 1 is the structural representation of a kind of intrinsic safety computer shielded cable that the utility model proposes.
With reference to Fig. 1, a kind of intrinsic safety computer shielded cable that the utility model proposes, comprising: cable core, total lapping layer 2, total metallo-plastic composite bed 3, metal knitted total screen 4, restrictive coating 5;
Cable core comprises many insulated wire cores, insulated wire cores comprises two wires, first point of lapping layer 13, sub-shield, second point of lapping layer 16, two wire pair twists, first point of lapping layer 13 polyester belt is wrapped to be formed, it is coated on two wire outsides, be provided with the second drainage thread 8, second drainage thread 8 in first point of lapping layer 13 and adopt circular copper wire, its sectional area is more than or equal to 0.2mm
2, it is outside that sub-shield is coated on first point of lapping layer 13, sub-shield comprises point plastic-aluminum combined layer 14 and is coated on a point proof copper-wire braided sub-shield 15 for plastic-aluminum combined layer 14 outside, the count of proof copper-wire braided sub-shield 15 is greater than 80%, second point of lapping layer 16 polyester belt is wrapped to be formed, it is coated on sub-shield outside, wire comprises the conductor 11 being positioned at middle part and the insulating barrier 12 being coated on conductor 11 outside, insulating barrier 12 adopts insulating material of polyethylene or cross-linked polyethylene insulating material to make, many insulated wire cores pair twists and between all insulated wire cores and surrounding be filled with gasket for packing 6, thus form the cable core with circular cross-section,
Total lapping layer 2 adopts that polyester belt is wrapped to be formed, and it is coated on cable core outside, is provided with the first drainage thread 7 in total lapping layer 2, and adopt circular copper wire, its sectional area is more than or equal to 0.2mm
2, total metallo-plastic composite bed 3 adopts plastic-aluminum combined Transposed wind to form, total metallo-plastic composite bed 3 adopts metallo-plastic laminated film wrapped in total lapping layer 2 outside formation, metal knitted total screen 4 adopts the total screen of proof copper-wire braided, the count of the total screen of proof copper-wire braided is greater than 80%, it is outside that metal knitted total screen 4 is coated on total metallo-plastic composite bed 3, restrictive coating 5 adopts pvc sheath, it is outside that restrictive coating 5 is coated on metal knitted total screen 4, the metal material that metal knitted total screen 4 adopts is different from the metal material that metallo-plastic composite bed 3 adopts.
In the present embodiment, the intrinsic safety computer shielded cable proposed, total shielding adopts metallo-plastic laminated film+metal wire knitted double-layer shielding structure, and each insulated wire heart yearn is to being equipped with sub-shield, total shielding outside wrapped polyester film again, guarantee the electrical isolation between shielding, all insulated wire cores are provided with total shielding construction after twisted synthesizing cable together, and total shielding construction also adopts plastic-aluminum combined film+proof copper-wire braided double layer screen.By the intrinsic safety computer shielded cable of above-mentioned optimal design, structure is simple, reasonable in design, plastic-aluminum combined film+proof copper-wire braided double-layer shielding structure is all adopted by total screen and sub-shield, the shielding of 100% of cable can be guaranteed, make it have excellent shielding properties and antistatic, interference free performance.
In a specific embodiment, each insulated wire cores of cable has shielding, and shielding outside wrapped polyester film again, guarantee the electrical isolation between shielding.
In specific implementation process, insulating material adopts high-quality insulating material of polyethylene or cross-linked polyethylene insulating material, the working temperature of polyethylene and crosslinked polyethylene is respectively 70 DEG C and 90 DEG C, dielectric loss and dielectric constant little, and excellent electric properties, all there is superiority the aspects such as mechanical performance, thermal endurance class and antiseptic power.
In addition, shielding material adopts plastic-aluminum combined film, and placement cross section is not less than the circular copper wire of 0.2mm2 under its metal covering, and outside plastic-aluminum combined film, be provided with proof copper-wire braided screen, the count of proof copper-wire braided layer is greater than 80%, total shielding construction and separated-shielding structure all adopt drainage thread+plastic-aluminum combined film+proof copper-wire braided double-layer shielding structure, can guarantee the shielding of cable surface 100%, make it have excellent shielding properties and antistatic, interference free performance.
The above; be only the utility model preferably embodiment; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to according to the technical solution of the utility model and utility model design thereof and replace or change, all should be encompassed within protection range of the present utility model.
Claims (10)
1. an intrinsic safety computer shielded cable, is characterized in that, comprising: cable core, total lapping layer (2), total metallo-plastic composite bed (3), metal knitted total screen (4), restrictive coating (5);
Cable core comprises many insulated wire cores, insulated wire cores comprises two wires, first point of lapping layer (13), sub-shield, second point of lapping layer (16), two wire pair twists, first point of lapping layer (13) is coated on two wire outsides, it is outside that sub-shield is coated on first point of lapping layer (13), second point of lapping layer (16) is coated on sub-shield outside, wire comprises the conductor (11) being positioned at middle part and the insulating barrier (12) being coated on conductor (11) outside, many insulated wire cores pair twists and between all insulated wire cores and surrounding be filled with gasket for packing (6), thus form the cable core with circular cross-section,
Total lapping layer (2) is coated on cable core outside, total metallo-plastic composite bed (3) adopts metallo-plastic laminated film wrapped in the formation of total lapping layer (2) outside, it is outside that metal knitted total screen (4) is coated on total metallo-plastic composite bed (3), it is outside that restrictive coating (5) is coated on metal knitted total screen (4), and the metal material that metal knitted total screen (4) adopts is different from the metal material that metallo-plastic composite bed (3) adopts.
2. intrinsic safety computer shielded cable according to claim 1, is characterized in that, total lapping layer (2), first point of lapping layer (13), second point of lapping layer (16) all adopt that polyester belt is wrapped to be formed.
3. intrinsic safety computer shielded cable according to claim 1, is characterized in that, total metallo-plastic composite bed (3) adopts plastic-aluminum combined Transposed wind to form, and metal knitted total screen (4) adopts the total screen of proof copper-wire braided.
4. intrinsic safety computer shielded cable according to claim 3, is characterized in that, the count of the total screen of proof copper-wire braided is greater than 80%.
5. intrinsic safety computer shielded cable according to claim 1, is characterized in that, restrictive coating (5) adopts pvc sheath.
6. intrinsic safety computer shielded cable according to claim 1, is characterized in that, sub-shield comprises point plastic-aluminum combined layer (14) and is coated on the outside proof copper-wire braided sub-shield (15) of point plastic-aluminum combined layer (14).
7. intrinsic safety computer shielded cable according to claim 6, is characterized in that, the count of proof copper-wire braided sub-shield (15) is greater than 80%.
8. intrinsic safety computer shielded cable according to claim 1, is characterized in that, is provided with the first drainage thread (7) in total lapping layer (2), is provided with the second drainage thread (8) in first point of lapping layer (13).
9. intrinsic safety computer shielded cable according to claim 8, is characterized in that, the first drainage thread (7) and/or the second drainage thread (8) adopt circular copper wire, and its sectional area is more than or equal to 0.2mm
2.
10. intrinsic safety computer shielded cable according to claim 1, is characterized in that, insulating barrier (12) adopts insulating material of polyethylene or cross-linked polyethylene insulating material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521018292.8U CN205194406U (en) | 2015-12-08 | 2015-12-08 | This ampere of computer shielded cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521018292.8U CN205194406U (en) | 2015-12-08 | 2015-12-08 | This ampere of computer shielded cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205194406U true CN205194406U (en) | 2016-04-27 |
Family
ID=55787376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521018292.8U Expired - Fee Related CN205194406U (en) | 2015-12-08 | 2015-12-08 | This ampere of computer shielded cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205194406U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107945923A (en) * | 2017-10-13 | 2018-04-20 | 安徽庆华电缆有限公司 | A kind of polyethylene insulation flame-proof polyvinyl chloride flame-retardant sheath computer cable |
| CN107941287A (en) * | 2016-10-13 | 2018-04-20 | 浙江昭雅防爆电器有限公司 | A kind of mine explosion-suppression and intrinsic safety type flowmeter |
| CN108492915A (en) * | 2018-05-22 | 2018-09-04 | 安徽天康(集团)股份有限公司 | A kind of high temperature resistant voice-frequency cable |
| CN109585065A (en) * | 2018-12-04 | 2019-04-05 | 安徽省众和电仪科技有限公司 | High-speed tensile type bus cable |
| CN112317125A (en) * | 2020-11-10 | 2021-02-05 | 安徽鸿海电缆有限公司 | Instrument cable of intrinsic safety system |
-
2015
- 2015-12-08 CN CN201521018292.8U patent/CN205194406U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941287A (en) * | 2016-10-13 | 2018-04-20 | 浙江昭雅防爆电器有限公司 | A kind of mine explosion-suppression and intrinsic safety type flowmeter |
| CN107945923A (en) * | 2017-10-13 | 2018-04-20 | 安徽庆华电缆有限公司 | A kind of polyethylene insulation flame-proof polyvinyl chloride flame-retardant sheath computer cable |
| CN108492915A (en) * | 2018-05-22 | 2018-09-04 | 安徽天康(集团)股份有限公司 | A kind of high temperature resistant voice-frequency cable |
| CN109585065A (en) * | 2018-12-04 | 2019-04-05 | 安徽省众和电仪科技有限公司 | High-speed tensile type bus cable |
| CN112317125A (en) * | 2020-11-10 | 2021-02-05 | 安徽鸿海电缆有限公司 | Instrument cable of intrinsic safety system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205194406U (en) | This ampere of computer shielded cable | |
| CN101707067A (en) | Low-smoke halogen-free flame-retardant multifunctional armored cable for ship and marine engineering | |
| CN101707071A (en) | Low-smoke halogen-free light intrinsically-safe instrument flexible cable for ocean engineering | |
| CN203026256U (en) | Communication cable for halogen-free low-smoke flame-retardant fire-proof ship | |
| CN102364601A (en) | Anti-interference low-voltage cable for balance of plant (BoP) of nuclear power station | |
| CN201663005U (en) | Low-smoke halogen-free flame-retardant cable for electronic computers | |
| CN104123991A (en) | Insulating variable frequency cable with crosslinked polyethylene jacket | |
| CN202134273U (en) | Flame-retardant high temperature-resistant intrinsically safe computer cable | |
| CN104112504A (en) | Polyvinyl chloride insulated soft cable | |
| CN203422967U (en) | Flexible anti-twisting composite insulation power cable | |
| CN202549456U (en) | Flame retardant fire-resistant power cable with rated voltage of 0.6/1kV | |
| CN203644459U (en) | Aluminium alloy flame-retardant frequency variable cable | |
| CN201725603U (en) | High-performance special instrument loop cable for boats | |
| CN202871374U (en) | Intrinsic safe computer control cable | |
| CN203760182U (en) | Fireproof flame-retardant cable | |
| CN203276890U (en) | Oil-sludge-resistant and high-flame-retardant intrinsic safe computer cable for oil platform | |
| CN202352409U (en) | Anti-interference low-voltage cable for nuclear power station BOP (balance of plant) | |
| CN203386487U (en) | A three-core polyvinyl chloride insulating cable | |
| CN202373369U (en) | Frequency converter cable | |
| CN201749698U (en) | Anti-interference special instrument loop cable for ship | |
| CN206379189U (en) | A kind of high-performance I.S.computer cable | |
| CN203644461U (en) | Aluminium alloy fire-retardant frequency variable cable | |
| CN204926884U (en) | Crosslinked polyethylene shielding frequency conversion cable | |
| CN203300247U (en) | Halogen-free low-smoke flame-retardation instrument cable for nuclear power station | |
| CN205264374U (en) | Sea worker's equipment is with this ampere of instrument of special type cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160427 Termination date: 20181208 |