CN102456435A - Lightningproof electro-inductive signal transmission line - Google Patents
Lightningproof electro-inductive signal transmission line Download PDFInfo
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- CN102456435A CN102456435A CN2011100628958A CN201110062895A CN102456435A CN 102456435 A CN102456435 A CN 102456435A CN 2011100628958 A CN2011100628958 A CN 2011100628958A CN 201110062895 A CN201110062895 A CN 201110062895A CN 102456435 A CN102456435 A CN 102456435A
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- magnetic field
- signal transmssion
- shielding layer
- transmission line
- transmssion line
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Abstract
The invention provides a lightningproof electro-inductive signal transmission line, which can prevent damage of relevant equipment caused by thunder and lightning through the signal transmission line. The transmission line sequentially comprises a core wire, an insulating medium layer, a copper net and an insulation sleeve from the inside out, and also comprises a magnetic field shielding layer wrapped on the external side of the core wire, wherein the magnetic field shielding layer is made of magnetic conduction materials. According to thelightningproof electro-inductive signal transmission line, an inductive magnetic field generated in a lightning stroke process can be shielded, and a protection function is played on an equipment port connected with the transmission line, so that the equipment connected with the transmission line cannot be damaged, and thus the lightningproof aim is achieved.
Description
The application requires application number to be 201010516902.2, the applying date is on October 20th, 2010, denomination of invention is whole priority of the application for a patent for invention of " anti-lightning induction signal transmssion line ".
Technical field
The present invention relates to audio frequency and video, high frequency, digital transmission technology, particularly relate to a kind of anti-lightning induction signal transmssion line.
Background technology
In some thunder and lightning hotspots, electronic equipment often receives the destruction of thunder and lightning.For example in the maintenance work of radio and television lift-off technology; The audio frequency and video input of transmitting apparatus and signal transmission apparatus, output port receive the thunder and lightning damage more serious; Audio frequency and video input port like frequency modulation, television transmitter exciter; The audio output port of microwave decoder, the high frequency input port of DVB, broadcasting causes bigger influence to safe and high quality.
Through experiment and observation for a long time; Find a kind of solution at present; This method is that the input/output port at electronic equipment installs the voltage-regulator diode protection circuit additional; Said protective circuit adopts (or the in opposite directions) connection relatively of two voltage stabilizing didoes, inserts the imput output circuit of electronic equipment, and electronic equipment is protected.
With reference to Fig. 1, be the sketch map that in the prior art audio & video equipment is installed additional the voltage-regulator diode protection circuit.With audio frequency (balance) output input circuit is example; The voltage stabilizing didoe that D1, D2, D3, D4 add up after being; Two voltage stabilizing didoe D1, D2 reverse (relatively or in opposite directions) series connection back is inserted between protected equipment audio balance input (or output) end (L) and the ground, connect after D3, the D4 differential concatenation between another input (or output) end (R) and the ground.
Said method can reduce the fault that equipment is struck by lightning, but when thunder and lightning was strong, the above-mentioned voltage stabilizing didoe that installs that adds also was struck by lightning bad.Therefore, existing this protective circuit can not guarantee the safety of electronic equipment under the thunder and lightning environment fully, and electronic equipment still exists very big damage dangerous when thunderbolt.
Summary of the invention
The invention provides a kind of anti-lightning induction signal transmssion line, can prevent that thunder and lightning from damaging through the relevant device that signal transmssion line causes.
In order to address the above problem; The invention discloses a kind of anti-lightning induction signal transmssion line; Said transmission line comprises heart yearn, insulating medium layer, copper mesh and insulating sleeve from inside to outside successively, also comprises: be wrapped in the magnetic field shielding layer in the heart yearn outside, said magnetic field shielding layer is processed by permeability magnetic material.
Preferably, said is in the copper mesh outside in the heart yearn outside.
Preferably, said is between copper mesh and insulating sleeve, to be enclosed with the magnetic field shielding layer in the copper mesh outside.
Preferably, said in the copper mesh outside for to be enclosed with the magnetic field shielding layer in the outside of insulating sleeve.
Preferably, the said magnetic field shielding layer thin layer of processing sealing by permeability magnetic material is wrapped in the heart yearn outside.
Preferably, said magnetic field shielding layer is a strip, is spirally wound on the heart yearn outside.
Preferably, the magnetic field shielding layer width of said strip is the 5-8 millimeter.
Preferably, said magnetic field shielding layer is processed dense net by permeability magnetic material and is wrapped in the heart yearn outside.
Preferably, said heart yearn is many.
Preferably, said permeability magnetic material is a silicon steel.
Compared with prior art, the present invention includes following advantage:
Signal transmssion line provided by the invention has increased one deck magnetic field shielding layer in the heart yearn outside; Can shield the induced field that produces in the lightning stroke process; Device port to being connected with transmission line plays a protective role, and said transmission line institute connection device is not damaged, and then reaches the purpose of lightning protection.
And transmission line according to the invention also is applicable in the variation magnetic field environment that other reason causes, like the power line of power electricity, and the rapid variation that when having a power failure suddenly, can produce electric current, consequent changes of magnetic field; Also can be used for the big variation magnetic field that the magnetic storm bomb produced in moment in the military affairs.
Description of drawings
Fig. 1 is the sketch map that in the prior art audio & video equipment is installed additional the voltage-regulator diode protection circuit;
Fig. 2 is the sketch map that among the present invention signal transmssion line is carried out magnetic field shielding;
Fig. 3 is the structure chart of the said a kind of anti-lightning induction signal transmssion line of the preferred embodiment of the present invention;
Fig. 4 is an electric principle schematic of the present invention.
Embodiment
For make above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, below in conjunction with accompanying drawing and embodiment the present invention done further detailed explanation.
To the problem that electronic equipment often is struck by lightning and damages, a kind of solution of the proposition of the invention property is to make it possess lightning protection function after existing signal transmssion line is improved, thus the equipment that protection is connected with this transmission line.Among the present invention, said signal transmssion line comprises all kinds such as video signal transmission wire, audio signal transmission wire, high-frequency signal transmission wire and digital data transmission line.
The present invention proposes with multiple authentication through studying for a long period of time of inventor, and its process is following:
Phenomenon through voltage stabilizing didoe is broken is analyzed discovery; Common signal transmssion line is made up of heart yearn, insulating medium layer, copper mesh and insulating sleeve; The heart yearn of transmission line is to be shielded in the copper mesh, and copper mesh two ends ground connection all, and dispatch from foreign news agency can't directly get at all; Moreover the output of machinery equipment, input circuit itself can not produce so high disintegration voltage, so the inventor thinks it possibly is due to the reason of magnetic induction.Further analyze, magnetic induction is from producing less than 20 meters long signal transmssion lines.The inventor finds that also copper material (copper mesh in the transmission line) does not play shielding action to magnetic field simultaneously.Therefore, the inventor judge be the magnetic field that produces of thunder and lightning through magnetic induction, produce induced electromotive force and device port generation destruction at the heart yearn of signal transmssion line to being connected with transmission line.
Pinpoint the problems behind the place, the inventor proposes a kind of solution earlier, promptly changes the line position of walking of signal transmssion line, and the cabling that makes transmission line is away from ground wire and power electricity cabling.Perhaps, carry out magnetic field shielding for the cabling of transmission line, as shown in Figure 2, transmission line is through in irony flexible metal conduit or the irony sleeve pipe.Because the irony sleeve pipe has shielding action to magnetic field (B), and is almost nil in iron pipe internal magnetic field intensity, on signal transmssion line, also just can't produce induced current, and then protect the input of equipment, output port not to be damaged.Empirical tests, this mode can be protected equipment well, so judgement before is correct.
But; Owing in the middle of practical operation, be difficult to signal transmssion line is all shielded with the irony sleeve pipe, so the inventor is again to this improvement; Anti-lightning induction signal transmssion line below having proposed, this transmission line has good, simple in structure, the easy to use advantage of lightning protection effect.
With reference to Fig. 3, be the structure chart of the said a kind of anti-lightning induction signal transmssion line of the preferred embodiment of the present invention.
The center of said anti-lightning induction signal transmssion line is a heart yearn 1, and insulating medium layer 2 is arranged around the heart yearn 1, and copper mesh 3 is arranged outside the insulating medium layer 2, the magnetic field shielding layer 4 that copper mesh 3 outer useful permeability magnetic materials are processed, the magnetic field shielding layer 4 outer insulating sleeve 5 that is surrounded by.Wherein, said heart yearn 1 can be many.
The lightning protection principle of said anti-lightning induction signal transmssion line is following:
With reference to Fig. 4, be electric principle schematic of the present invention.
During concrete the use, but the input/output port of said anti-lightning induction signal transmssion line access device is identical with common signal transmssion line method for using, and wherein magnetic field shielding layer 4 can be vacant in the port that equipment inserts.
When lightning induction being arranged and the variation magnetic field that other reason causes is arranged; Around said anti-lightning induction signal transmssion line, can produce stronger induced field B; Because the shielding action of the magnetic field shielding layer 4 that useful permeability magnetic material is processed; The heart yearn 1 of transmission line can not produce induced electromotive force, thereby has protected anti-lightning induction signal transmssion line institute connection device not to be damaged, and then has reached the purpose of lightning protection.
Above-mentioned example is a preferred embodiment of the present invention, is a kind of position setting of the best because magnetic field shielding layer 4 is located between copper mesh 3 and the insulating sleeve 5, does not influence the normal use of signal transmssion line like this.
But in fact, need only the outside that magnetic field shielding layer 4 is located at heart yearn 1, just can on heart yearn 1, produce magnetic induction electromotive force by armoured magnetic field.And said heart yearn 1 outside, can be between copper mesh 3 and insulating sleeve 5, also can be in the outside of insulating sleeve 5, above-mentioned irony sleeve pipe just is provided in a side of a kind of application in insulating sleeve 5 outsides, and these all are provided in a side of the situation in copper mesh 3 outsides; Do not have copper mesh 3 in the simple transmission line of if structure, then magnetic field shielding layer 4 can also be directly arranged between insulating medium layer 2 and the insulating sleeve 5, can certainly be in the outside of insulating sleeve 5.
In addition, no matter magnetic field shielding layer 4 is located at above-mentioned which position, can adopt several kinds of following modes to be wrapped on the anti-lightning induction signal transmssion line:
A kind of mode is to be wrapped in heart yearn 1 outside by the thin layer that permeability magnetic material is processed sealing, and optimum is to be wrapped between copper mesh 3 and the insulating sleeve 5, and the closure of this thin layer is best, so the performance of armoured magnetic field is also best.
Another kind of mode is magnetic field shielding layer 4 to be processed have the rectangular of certain-length and width, is spirally wound on heart yearn 1 outside then, and optimum is to be wrapped between copper mesh 3 and the insulating sleeve 5.During winding,, also can the magnetic field shielding layer 4 of strip be stacked and twine and do not stay slit, perhaps overlapping winding multilayer as far as possible in order to guarantee sealing.
Also having a kind of mode is to process dense net by permeability magnetic material to be wrapped in heart yearn 1 outside, and optimum is to be wrapped between copper mesh 3 and the insulating sleeve 5.Because dense net also has good sealing property, therefore also can play the lightning protection effect.
Certainly,, also can adopt other modes that magnetic field shielding layer 4 is wrapped in heart yearn 1 outside of transmission line, not enumerate one by one here except above-mentioned three kinds of modes enumerating.
Need to prove that also the permeability magnetic material that magnetic field shielding layer 4 adopts can have multiple, preferably adopts the higher material of permeability and magnetic saturation.For example process better with the silicon steel sheet of making transformer core, because silicon steel is the steel of a kind of siliceous (silicon is also claimed silicon), its silicon content is 0.8～4.8%, and the magnetic conduction of silicon steel is very capable.And silicon steel preferably adopts hot-rolled steel, because hot-rolled steel has soft and moist preferably degree.In addition, also can adopt ferrous material to process iron net or iron sheet flexible pipe, can certainly be other permeability magnetic material.
In sum, the rate of change of the thickness of the antimagnetic effect of magnetic field shielding layer 4 and material, screen and external magnetic field intensity is relevant.Therefore the present invention also provides a kind of more excellent implementation, as follows:
The light sheet that permeability magnetic material preferably selects for use silicon steel to process, it is the very long strip sheetmetal of 5-8 millimeter (being slightly larger than the diameter of line usually) length that the thin silicon sheetmetal is processed width, carries out spiral then in the outside of copper mesh 3 and twines.So both lightning protection effect preferably can be arranged, and can also make signal transmssion line that pliability is preferably arranged.Require under the general situation in lightning protection, the dense net that the magnetic field shielding layer also can adopt silicon steel and ferrous material to process is made, and also can reach ideal effect.
Explanation through above embodiment can be found out; Said anti-lightning induction signal transmssion line is through increasing one deck magnetic field shielding layer in the heart yearn outside; Can shield the induced field that produces in the lightning stroke process; Device port to being connected with transmission line plays a protective role, and said transmission line institute connection device is not damaged, and then reaches the purpose of lightning protection.And said anti-lightning induction signal transmssion line also is simple in structure and convenient in use.
The described anti-lightning induction signal transmssion line of the embodiment of the invention is applicable in the following environment:
1, lightning protection
1) anti-thunder and lightning is directly responded to: thunder and lightning is a kind of natural phenomena; Be when rainy weather between sky high in the clouds and the earth due to the discharge; When discharge, can produce huge variable-current, and around this variable-current, will produce huge induced field, this magnetic field has stronger destruction;
2) anti-thunder and lightning is responded to indirectly: when thundering; Thunder and lightning can be introduced machinery equipment with thunder and lightning through iron tower or antenna, and the electric current of this thunder and lightning can flow into the earth through earth connection, and this electric current is bigger impulse current; Around it, also can produce bigger variation magnetic field, this magnetic field also has destruction.
2, anti-magnetic disturbance
When less variation magnetic field is arranged, can cause interference to transmitted number near signal transmssion line.
3, anti-bigger variation magnetic field
When bigger changes of magnetic field was arranged near the signal transmssion line, like the power line of power electricity, the rapid variation that when having a power failure suddenly, can produce electric current produced changes of magnetic field thus; Also can be used for also can producing bigger variation magnetic field like the magnetic storm bomb in moment in the military affairs.
More than to a kind of anti-lightning induction signal transmssion line provided by the present invention; Carried out detailed introduction; Used concrete example among this paper principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. anti-lightning induction signal transmssion line; Said transmission line comprises heart yearn, insulating medium layer, copper mesh and insulating sleeve from inside to outside successively; It is characterized in that, also comprise: be wrapped in the magnetic field shielding layer in the heart yearn outside, said magnetic field shielding layer is processed by permeability magnetic material.
2. anti-lightning induction signal transmssion line according to claim 1 is characterized in that:
Said is in the copper mesh outside in the heart yearn outside.
3. anti-lightning induction signal transmssion line according to claim 2 is characterized in that:
Said is between copper mesh and insulating sleeve, to be enclosed with the magnetic field shielding layer in the copper mesh outside.
4. anti-lightning induction signal transmssion line according to claim 2 is characterized in that:
Said in the copper mesh outside for to be enclosed with the magnetic field shielding layer in the outside of insulating sleeve.
5. according to the arbitrary described anti-lightning induction signal transmssion line of claim 1 to 4, it is characterized in that:
The thin layer that said magnetic field shielding layer is processed sealing by permeability magnetic material is wrapped in the heart yearn outside.
6. according to the arbitrary described anti-lightning induction signal transmssion line of claim 1 to 4, it is characterized in that:
Said magnetic field shielding layer is a strip, is spirally wound on the heart yearn outside.
7. anti-lightning induction signal transmssion line according to claim 6 is characterized in that:
The magnetic field shielding layer width of said strip is the 5-8 millimeter.
8. according to the arbitrary described anti-lightning induction signal transmssion line of claim 1 to 4, it is characterized in that:
Said magnetic field shielding layer is processed dense net by permeability magnetic material and is wrapped in the heart yearn outside.
9. according to the arbitrary described anti-lightning induction signal transmssion line of claim 1 to 4, it is characterized in that:
Said heart yearn is many.
10. according to the arbitrary described anti-lightning induction signal transmssion line of claim 1 to 4, it is characterized in that:
Said permeability magnetic material is a silicon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100628958A CN102456435A (en) | 2010-10-20 | 2011-03-16 | Lightningproof electro-inductive signal transmission line |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010516902 | 2010-10-20 | ||
| CN201010516902.2 | 2010-10-20 | ||
| CN2011100628958A CN102456435A (en) | 2010-10-20 | 2011-03-16 | Lightningproof electro-inductive signal transmission line |
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| Publication Number | Publication Date |
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| CN102456435A true CN102456435A (en) | 2012-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100628958A Pending CN102456435A (en) | 2010-10-20 | 2011-03-16 | Lightningproof electro-inductive signal transmission line |
| CN2011200687701U Expired - Fee Related CN202120655U (en) | 2010-10-20 | 2011-03-16 | Lightning protection induction signal transmission line |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200687701U Expired - Fee Related CN202120655U (en) | 2010-10-20 | 2011-03-16 | Lightning protection induction signal transmission line |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102456435A (en) * | 2010-10-20 | 2012-05-16 | 李宝华 | Lightningproof electro-inductive signal transmission line |
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|---|---|---|---|---|
| CN2049817U (en) * | 1989-03-04 | 1989-12-20 | 江苏省宝胜电缆厂 | Special type shielded control cable |
| CN2426194Y (en) * | 2000-06-20 | 2001-04-04 | 蔡政郎 | Multi-laminating magnetic shielded color information line |
| CN2530329Y (en) * | 2002-03-05 | 2003-01-08 | 德阳电缆股份有限公司 | Specially shielded/armoured control cable |
| CN1439188A (en) * | 2000-05-31 | 2003-08-27 | 皮雷利·卡维系统有限公司 | Method of screening the magnetic field generated by an electrical power transmission line, and electrical power transmission line |
| CN2594936Y (en) * | 2002-11-08 | 2003-12-24 | 钢铁研究总院 | Cable line with electromagnetic shield |
| CN2618268Y (en) * | 2003-02-18 | 2004-05-26 | 黄叙银 | Shielded controlling cable |
| CN101216585A (en) * | 2008-01-08 | 2008-07-09 | 上海华魏自动化设备有限公司 | Tunnel safety sensing optic cable |
| CN201465633U (en) * | 2009-04-24 | 2010-05-12 | 上海上缆辐照技术开发有限公司 | Environmental protection cross linking cloth wire packed by metal protective sleeve |
| CN201590290U (en) * | 2009-08-31 | 2010-09-22 | 厦门普罗太克科技有限公司 | Communication line for UPS redundant parallel system |
| CN202120655U (en) * | 2010-10-20 | 2012-01-18 | 李宝华 | Lightning protection induction signal transmission line |
-
2011
- 2011-03-16 CN CN2011100628958A patent/CN102456435A/en active Pending
- 2011-03-16 CN CN2011200687701U patent/CN202120655U/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2049817U (en) * | 1989-03-04 | 1989-12-20 | 江苏省宝胜电缆厂 | Special type shielded control cable |
| CN1439188A (en) * | 2000-05-31 | 2003-08-27 | 皮雷利·卡维系统有限公司 | Method of screening the magnetic field generated by an electrical power transmission line, and electrical power transmission line |
| CN2426194Y (en) * | 2000-06-20 | 2001-04-04 | 蔡政郎 | Multi-laminating magnetic shielded color information line |
| CN2530329Y (en) * | 2002-03-05 | 2003-01-08 | 德阳电缆股份有限公司 | Specially shielded/armoured control cable |
| CN2594936Y (en) * | 2002-11-08 | 2003-12-24 | 钢铁研究总院 | Cable line with electromagnetic shield |
| CN2618268Y (en) * | 2003-02-18 | 2004-05-26 | 黄叙银 | Shielded controlling cable |
| CN101216585A (en) * | 2008-01-08 | 2008-07-09 | 上海华魏自动化设备有限公司 | Tunnel safety sensing optic cable |
| CN201465633U (en) * | 2009-04-24 | 2010-05-12 | 上海上缆辐照技术开发有限公司 | Environmental protection cross linking cloth wire packed by metal protective sleeve |
| CN201590290U (en) * | 2009-08-31 | 2010-09-22 | 厦门普罗太克科技有限公司 | Communication line for UPS redundant parallel system |
| CN202120655U (en) * | 2010-10-20 | 2012-01-18 | 李宝华 | Lightning protection induction signal transmission line |
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| Publication number | Publication date |
|---|---|
| CN202120655U (en) | 2012-01-18 |
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Application publication date: 20120516 |