CN204242631U - High-energy ignition multiple layer metal shielded type cable - Google Patents
High-energy ignition multiple layer metal shielded type cable Download PDFInfo
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- CN204242631U CN204242631U CN201420571041.1U CN201420571041U CN204242631U CN 204242631 U CN204242631 U CN 204242631U CN 201420571041 U CN201420571041 U CN 201420571041U CN 204242631 U CN204242631 U CN 204242631U
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- shielded type
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Abstract
A kind of high-energy ignition multiple layer metal shielded type cable that the utility model proposes, comprises the cable shield be made up of skin, intermediate layer and inner-layer combination.Cable shield is made up of the anti-ripple cover (4) of stainless steel net (1), corrugated metal band (2), insulating sleeve (3) and copper.The utility model cable shield is best in quality, and electromagnetism leaks little, and cable external protection dielectric strength is high; loss is low; adverse circumstances are adaptable, the stray radiation of maskable ignition energy, can effectively avoid and prevent the electromagnetic interference to other weak current equipment on-the-spot, field electronic equipment.Solve tradition shielding net and there is a lot of electromagnetic leakage point defect, or the net defects such as to add flexible pipe electromagnetic compatibility not up to standard, and weight exceeds standard, bending property difference.
Description
Technical field
The utility model relates to a kind of engine that is mainly used in and transmits electric energy, protects the electromagnetic shielding firing cable of inner lead, especially resistant to elevated temperatures high energy (single transferring energy is greater than 16 joules) igniting multiple layer metal shielded type cable.
Background technology
Chewed (burning torch) three by high energy ignition unit, high-energy ignition cables, high energy semiconductor electricity in the high-energy ignition system that forms of part, firing cable is the main screening arrangement of ignition system energy transmission member.Along with developing rapidly of aircraft, simultaneously more and more high to system EMC Requirements, ignition system generally adopts electronic ignition mode, and electromagnetic interference is one of principal element affecting ignition system circuit and other system worked well of surrounding.The development & application of increasing high-tech electronic product, brings an important topic that can not be ignored---the research of Electro Magnetic Compatibility.Electro Magnetic Compatibility refers to that electric device or electrical system do not produce interference or not by environmental interference, be operated in the ability in designated environment.The impact that electromagnetic interference produces is serious, is related to the security reliability of automobile, boats and ships aircraft, has become an extremely important and urgent research topic being badly in need of solving.Ignition system produces high voltage, heavy current in the course of the work, be equivalent to electromagnetic emission body, the ignition energy of ignition system is transferred to ignition electric nozzle by firing cable, avalanche type electric discharge is formed at spark plug gap (semiconductor surface), electric spark is produced in work, initial firing current abrupt transients and produce the higher-order of oscillation and be transmitted in the air with electromagnetic wave in whole discharge process, to the normal work of the electronic equipment around within the scope of hundreds of meters and other radio device, produce interference in various degree, cause much serious consequence.The interference produced not only can affect the normal work of extraneous electronic and electrical equipment, and can affect the normal work of own electronic electric equipment, and therefore, electromagnetic environment interference can produce adverse influence to the performance of electronic product, even can cause its afunction.The ignition system of radio interference source mainly engine, the higher-order of oscillation that its disturbing wave produces from ignition system secondary voltage, secondly, also can generate electromagnetic waves when generator loading current break and rectification.The interference electromagnetism wavelength-division conducted interference produced and radiated interference two kinds.Conducted interference electromagnetic wave directly inputs wireless device and electronic equipment internal by wire, radiated interference electromagnetic wave is then at spatial, wireless device inside is inputted by antenna (as ignition system high-voltage line is just equivalent to antenna), thus make their service behaviour be difficult to play, affect the fail safe of electronic equipment, reliability and stability etc. thus.The circuit be connected with spark plug and ignition coil is the circuit with ferrite bar in the middle of a kind of wire harness.The ferrite bar of certain length is wound with the spiral coil of the specific number of turns, and this wire harness is very responsive to frequency, and the vibration in the circuit that any factor inspires, all can launch generation electromagnetic interference by wire etc. in the form of an electromagnetic wave.Firing cable is the passage of ignition system Energy Transfer, and cable skin electric current is the important channel of couple electromagnetic pulse energy with in-field waveform, cable length, cable shield induced current.High-altitude electromagnetic pulse (HEMP) due to its energy large, frequency spectrum is wide, wide coverage, can cause communication, the damage of electronics and electric power system or destruction.The frequency electromagnetic waves that ignition wire produces when high-tension ignition, electronic equipment is interfered, and even cannot normally work.On naval vessel electrically or in electronic system, cable is mainly used in connecting different equipment or system, and realizes effective transmission of energy and information between them.Usually; system and device interior extensively distributed all kinds of cable; and due to the limited cable that makes of naval vessel internal placement installing space intensive; often there is electromagnetic interference because of radiation and being coupled of conduction of cable, in ship communication system, often can have impact on the normal work of weak electricity system equipment because of high power station to the electromagnetic interference problem of antenna.With the development & application of increasing high-tech automobile electronics, also there is electromagnetic interference problem in vehicle electronics.Petrolic high-tension ignition system can produce strong electromagnetic wave, disturbs the normal operation of the radio broadcasting around it and radio communication business, and pollutes electromagnetic environment.The various electronic and electrical equipments be widely used on vehicle produce electromagnetic interference too and engine igniting system produces the interference of conducting along power line, make some electronic units under this disturbing pulse condition, cisco unity malfunction, even cause damaging.The frequency electromagnetic waves that automotive ignition electric wire produces when high-tension ignition, is interfered to the electronic equipment in car, even cannot normally work.In sum, the radiation-emitting of electromagnetic compatibility exceeds standard and is mainly manifested in firing cable, resolve the Electro Magnetic Compatibility of firing cable, namely the metal isolation that firing cable metallic shield technology guarantees inside and outside two area of space is handled well, to control electric field, magnetic field by a region to the induction in another region and radiation, the high-energy ignition energy of firing cable transmission is besieged, prevents electric field to outdiffusion.Firing cable shield should possess the function weakening interference, namely possess absorption energy (eddy current loss), reflected energy (boundary reflection of electromagnetic wave on shield) and offset the effects such as energy (electromagnetic induction produces reverse electromagnetic field on the shielding layer, can offset part and disturb electromagnetic wave).General most of metal material can provide the screening effectiveness of 100dB, but in actual applications, the screening effectiveness reaching more than 50dB is more difficult, because the screening effectiveness of shield not only depends on shield material, more importantly depend on shield manufacturing process and structure, shield should possess conducting continuity (whole shield must be complete, a continuous print electric conductor, but must accomplish the Seal treatment of shield as much as possible in conjunction with actual demand in practical application work).General ordinary electromagnetic shielded type cable adopts (aluminium foil+braiding) double shield structure usually, and plastic-aluminum combined paper tinsel+70% tinned copper wire braiding, aluminium foil nominal thickness is 70 μm, wherein aluminum layer thickness >=40 μ.Because on-the-spot electromagnetic environment is complicated, between braid, there is serious crosstalk.For the technical disadvantages of engine ignition cable in prior art: 1. electromagnetic wave shielding can meet the requirements such as engine catalytic ignition fuel controller normalizing timer GJB relevant regulations; 2. firing cable multiple layer metal shield weight exceeds regulation requirement; 3. firing cable manufacturability difference (being mainly manifested in bendability).
Summary of the invention
The purpose of this utility model is the deficiency existed for above-mentioned prior art, for firing cable provides a kind of dielectric strength high, loss is low, the stray radiation of maskable ignition energy, adverse circumstances are adaptable, and assembly process process is good, can reach more than 50dB screening effectiveness, capability of electromagnetic shielding meets the relevant regulatory requirements such as GJB, and weight meets the firing cable that user requires.。
The utility model solves the technical scheme that its technical problem adopts: a kind of high-energy ignition multiple layer metal shielded type cable, comprise the cable shield be made up of skin, intermediate layer and inner-layer combination, it is characterized in that: cable shield overlaps 4 by the anti-ripple of stainless steel net 1, corrugated metal band 2, insulating sleeve 3 and copper and forms.
The utility model has following beneficial effect compared to prior art.
The utility model adopts the rational assembly structure of multiple layer metal shield technology; unique chooses corresponding material and structure; cable shield is best in quality; electromagnetism leaks little; cable external protection dielectric strength is high, and loss is low, and adverse circumstances are adaptable; the stray radiation of maskable ignition energy, can effectively avoid and prevent the electromagnetic interference to other weak current equipment on-the-spot, field electronic equipment.
Outer employing stainless steel net, corrugated metal band
(metal knitted
+corrugated metal band
)double shield structure, anticorrosive, resistance to oxidation, oil resistant, water resistant, anti-coking, high temperature resistant, not by air pressure pollution effect, safe and reliable, metal knitted
+corrugated metal band utilizes the reflection of metal screen layer, absorption and skin effect, and (skin effect refers to that the distribution of electric current at cross-sectional area of conductor is tending towards conductive surface distribution with the rising of frequency, frequency is higher, skin depth is less, namely frequency is higher, electromagnetic penetration capacity is more weak) realize the function preventing electromagnetic interference and electromagnetic radiation, there is extraordinary electromagnetic compatibility (EMC) characteristic.Utilize the electromagnetic reflection of metal pair, absorption and skin effect principle, effectively prevent external electromagnetic interference from entering cable, also stop internal signal to radiate simultaneously, the work of interference miscellaneous equipment, and can offset electromagnetic induction on the shielding layer boundary reflection produce reverse electromagnetic field, interference electromagnetic wave energy, avoids cable length, cable skin electric current with the crosstalk of in-field waveform, cable shield induced current couple electromagnetic pulse energy.Can work reliably and with long-term under the mal-conditions such as-55 DEG C ~+260 DEG C ambient temperatures, 20000m high-altitude.Can reach more than 50dB screening effectiveness, weight, capability of electromagnetic shielding meet the relevant regulatory requirements such as GJB.Multiple layer metal shielding overcomes prior art and can meet GJB relevant regulatory requirements in-55 DEG C ~+120 DEG C ambient temperatures and electromagnetic wave shielding, and weight exceeds standard manufacturability difference etc.
Employing corrugated metal, intermediate layer band, insulating sleeve
(metal tape
+insulating case
)double shield structure antipollution, air-tightness are good, and the interference signal that can reduce to cause because of coupling invades.Electromagnetic induction produces eddy current in the band metal screen-wall of corrugated metal, makes electromagnetic wave be consumed in the thermal effect of eddy current, absorbs eddy current loss energy, offsets electromagnetic wave shield boundary reflection energy, outwards can not launch, thus can avoid the interference to radio wave.The stray radiation of screened ignition energy, prevents the electromagnetic interference to other on-the-spot electronic equipments.Even also can normally get angry in water at wet environment.
Internal layer adopts
(insulating case
+the anti-ripple cover of copper
)double shield insulation system electrical contact is reliable, corrosion-resistant, and contamination resistance is strong, and outside electromagnetic interference can be avoided to invade control line and holding wire.
The high-tension shielding firing cable that the utility model adopts multiple layer metal shielding to form, avoid traditional net and there is a lot of electromagnetic leakage point defect, or net to add flexible pipe electromagnetic compatibility not up to standard, weight exceeds standard, the defects such as bending property difference, fundamentally can overcome high-altitude electromagnetic pulse (HEMP) energy large, frequency spectrum is wide, wide coverage causes communication, the damage of electronics and electric power system or destruction, improves automobile, boats and ships, the electromagnetic immunity characteristic of aircraft electronics electric component, operational reliability and fail safe.
The utility model can also be widely used in electric power, metallurgy, petrochemical system, can be directly used in technical fields such as lighting natural gas, liquefied petroleum gas, kerosene, diesel oil, heavy oil, residual oil.
Accompanying drawing explanation
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof, but is not therefore limited among described scope of embodiments by the utility model.
Fig. 1 is the utility model high-energy ignition multiple layer metal shielded type cable structural representation.
In figure: 1 stainless steel net, 2 corrugated metal bands, 3 insulating sleeves, the anti-ripple cover of 4 bronze medal, 5 high temperature wires.
Embodiment
Consult Fig. 1.In high-energy ignition multiple layer metal shielded type cable described below, cable shield is primarily of stainless steel net 1, corrugated metal band 2, insulating sleeve 3 and copper anti-ripple cover 4 composition.Outer metal knitted stainless steel net, the corrugated metal band of adopting forms double shield structure.Employing corrugated metal, intermediate layer band, insulating sleeve shielding construction.Internal layer adopts insulating case
+copper anti-ripple cover shielding insulation structure.High temperature wire 5 penetrates the anti-ripple cover 4 of copper, be enclosed within insulating sleeve 3, corrugated metal band 2 half-stack package is overlying on insulating sleeve 3 outer surface of tube body, stainless steel net 1 is sleeved on corrugated metal band 2, forming firing cable take metal shield as the electromagnetic compatibility firing cable of cell cube, can realize the functional performance requirement of EMC Requirements that firing cable take metal shield as cell cube and high-energy ignition multiple layer metal shielded type cable.Wherein, corrugated metal band is assemblied in firing cable, not only achieves Electro Magnetic Compatibility but also meet product bendability and weight demands.The anti-ripple cover of copper can be copper shield net, copper braiding net sleeve,
beadopt zinc-plated (silver) oxygen-free copper footpath to weave to form, weave barrel-shaped, be enclosed within the electric cable accessories outside cable.Copper anti-ripple cover can be the tin-coated copper woven mesh sleeve pipe adopting zinc-plated (silver) soft circular copper wire (0.12,0.15) to be woven into hollow wired tube through multiply (16,24,48,64 ingot)
,for the shielding copper wired tube preventing wave interference or shield.It is 4mm and following that tin-coated copper weaves anti-ripple cover cover footpath, and the count that count is not less than 65%, more than 4mm is not less than 80%.Corrugated metal band is corrugated flexible metal tube, can bend easily, elongate, compress (certain angle of bend, elongation compression factor is all restricted).Metal bellows is the tubing of wave sample that a kind of external form resembles rule, conventional metal bellows have carbon steel with stainless, also have steel serve as a contrast north, aluminium matter etc.Be mainly used in needing the axial transmission of very little bending radius non-concentric, or irregular turning, flexible, or the thermal deformation etc. of extraction duct, or be not easy to do connecting of pipeline and pipeline by the occasion of fixing elbow installation.Corrugated flexible metal tube (abbreviation bellows) is the flexible duct of a kind of high-quality in modern industry pipeline.Bellows metal hose is called corrugated tube (Corrugated Tube in America custom
)or ripple capsule
(corrugated Box
),metal capsule (moral Metallbulgen is generally called in Europe
, Englishmetal Bellows
).corrugated flexible metal tube forms primarily of bellows, net and joint.Interior pipe is the thin-wall stainless steel bellows with spirality or annular waveform.The outer field net of bellows is woven by certain parameter by stainless steel wire or steel band.Net is woven in certain sequence by cross one another some strands of wires or some metal tapes that splits and forms, and is sleeved on the outer surface of metal bellows with the angle specified, plays a part to strengthen and shielding.Bellows is the body of metal hose, plays a part flexibility; Net plays a part to strengthen, shield.Woven the bellows of net, its intensity can improve tens times to tens times.The highest screening ability can reach 99.95%.The material of net is general identical with bellows material, also has with bi-material coupling.One deck net only used by common metal flexible pipe; Special use occasion, can have braiding two-layer, three layers.Corrugated metal is soft is ring bellows, the semicircular ring phase cut-grafting centripetal with some concave surfaces of some annulus diaphragm outer rims, the pipe of inner edge and the particular geometry of the semicircular ring phase cut-grafting of some concave surface vests, ensure the outer net of the few contact area of flexible pipe corrugated portion, reduce the Relative friction of net and corrugated portion, be convenient to bellows and bend.Corrugated flexible metal tube has corrosion-resistant, high temperature resistant, low temperature resistant (-196 DEG C ~ 600 DEG C), the feature lightweight, volume is little, there have to be flexible large, good springiness, flexibility are good.The interface of high-tension shielding firing cable and burning torch adopts high resiliency low resistance standard plug structure.
Claims (2)
1. a high-energy ignition multiple layer metal shielded type cable, comprise the cable shield be made up of skin, intermediate layer and inner-layer combination, it is characterized in that: cable shield is made up of the anti-ripple cover (4) of stainless steel net (1), corrugated metal band (2), insulating sleeve (3) and copper.
2. high-energy ignition multiple layer metal shielded type cable according to claim 1, is characterized in that, outer metal knitted stainless steel net, the corrugated metal band of adopting forms double shield structure.
3. high-energy ignition multiple layer metal shielded type cable according to claim 1, is characterized in that, employing corrugated metal, intermediate layer band, insulating sleeve double shield structure.
4. high-energy ignition multiple layer metal shielded type cable according to claim 1, is characterized in that, internal layer adopts insulating case
+copper anti-ripple cover double shield insulation system.
5. high-energy ignition multiple layer metal shielded type cable according to claim 1, it is characterized in that, high temperature wire (5) penetrates the anti-ripple cover (4) of copper, be enclosed within insulating sleeve (3), corrugated metal band (2) half-stack package is overlying on insulating sleeve (3) outer surface of tube body, stainless steel net (1) is sleeved on corrugated metal band (2), forms the firing cable that firing cable take metal shield as the electromagnetic compatibility of cell cube.
6. high-energy ignition multiple layer metal shielded type cable according to claim 1, is characterized in that, the anti-ripple cover of copper is copper shield net, copper braiding net sleeve,
beadopt zinc-plated or silver-colored oxygen-free copper footpath to weave to form, weave barrel-shaped, be enclosed within the electric cable accessories outside cable.
7. high-energy ignition multiple layer metal shielded type cable according to claim 1, is characterized in that, copper anti-ripple cover cover footpath is 4mm and following, and count is not less than 65%, and cover footpath is that the count of more than 4mm is not less than 80%.
8. high-energy ignition multiple layer metal shielded type cable according to claim 1, is characterized in that, metal bellows is a kind of tubing of wave sample of profile rule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420571041.1U CN204242631U (en) | 2014-09-30 | 2014-09-30 | High-energy ignition multiple layer metal shielded type cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420571041.1U CN204242631U (en) | 2014-09-30 | 2014-09-30 | High-energy ignition multiple layer metal shielded type cable |
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| Publication Number | Publication Date |
|---|---|
| CN204242631U true CN204242631U (en) | 2015-04-01 |
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|---|---|---|---|
| CN201420571041.1U Active CN204242631U (en) | 2014-09-30 | 2014-09-30 | High-energy ignition multiple layer metal shielded type cable |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269215A (en) * | 2014-09-30 | 2015-01-07 | 四川泛华航空仪表电器有限公司 | Ignition cable shield |
| CN105304173A (en) * | 2015-11-01 | 2016-02-03 | 四川泛华航空仪表电器有限公司 | High-temperature- and high-voltage-resistant high-insulating-property ignition cable |
| CN105576573A (en) * | 2015-12-13 | 2016-05-11 | 中国航空工业集团公司西安飞机设计研究所 | Aircraft landing gear line protection method |
| CN114825225A (en) * | 2021-01-28 | 2022-07-29 | 中国航发商用航空发动机有限责任公司 | Cabin-penetrating cable assembly and installation method thereof |
-
2014
- 2014-09-30 CN CN201420571041.1U patent/CN204242631U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269215A (en) * | 2014-09-30 | 2015-01-07 | 四川泛华航空仪表电器有限公司 | Ignition cable shield |
| CN105304173A (en) * | 2015-11-01 | 2016-02-03 | 四川泛华航空仪表电器有限公司 | High-temperature- and high-voltage-resistant high-insulating-property ignition cable |
| CN105576573A (en) * | 2015-12-13 | 2016-05-11 | 中国航空工业集团公司西安飞机设计研究所 | Aircraft landing gear line protection method |
| CN105576573B (en) * | 2015-12-13 | 2018-06-29 | 中国航空工业集团公司西安飞机设计研究所 | A kind of undercarriage line protection method |
| CN114825225A (en) * | 2021-01-28 | 2022-07-29 | 中国航发商用航空发动机有限责任公司 | Cabin-penetrating cable assembly and installation method thereof |
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| GR01 | Patent grant |