CN2309007Y - Lightning protection device - Google Patents
Lightning protection device Download PDFInfo
- Publication number
- CN2309007Y CN2309007Y CN 97203321 CN97203321U CN2309007Y CN 2309007 Y CN2309007 Y CN 2309007Y CN 97203321 CN97203321 CN 97203321 CN 97203321 U CN97203321 U CN 97203321U CN 2309007 Y CN2309007 Y CN 2309007Y
- Authority
- CN
- China
- Prior art keywords
- coils
- lightning protection
- lightning
- coil
- protection device
- 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
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Abstract
The utility model relates to a lightning protection device, more specifically to a lightning protection device used in communication circuits and power circuits. In the lightning protection module of the utility model, the iron core is provided with at least two sets of coils, starting ends of the coils are connected with gas discharge tubes, a tap is led out from each set of coils, is connected with ground through a voltage-sensitive resistor, a load is led out from the end of each set of coils, an avalanche diodes is connected in series with the end of each coils simultaneously, the other end of the avalanche diode is connected with ground, and the number of turns and the winding direction of the two sets of coils are equal. Because of the scheme, the utility model has the advantages of fast working speed, obvious lightning protection effect, etc.
Description
The utility model relates to a kind of lightning protection device, specifically a kind of lightning protection device that is used for communication line and power circuit.
Existing lightning protection device adopts isolating transformer or reactor to make, or adopt gas discharge tube, piezo-resistance and molten fracture of wire to make merely, its weak point is: isolating transformer can't pass through direct current signal, reactor has great attenuation to AC signal, they all produce harmful effect to normal signal, and action is unreliable under the lightning wave effect of the approximate light velocity, and lightning protection effect is poor.
The purpose of this utility model is to avoid above-mentioned weak point of the prior art and a kind of reliable in action, lightning protection device that lightning protection effect is good is provided.
To achieve these goals, the utility model provides a kind of new technical solution: this lightning protection device mainly is made up of casing and lightning-protection module, lightning-protection module comprises winding shape iron core and the coil that is wound on the iron core, device seals in a pair of circuit during operation, on its iron core, be provided with at least two group coils, coil top connects gas discharge tube, and from every group of coil, draw tap after piezo-resistance ground connection, load is drawn from the end of two groups of coils, end at coil seals in avalanche diode, the other end ground connection of avalanche diode simultaneously.
In order to reach better effect, should make the number of turn of two groups of coils identical, around to identical.
Owing to adopted this scheme, make to the utlity model has advantages such as quick action, lightning protection effect be obvious.
Accompanying drawing is embodiment of the present utility model.
Fig. 1 is a schematic circuit of the present utility model.
Fig. 2 is a structural representation of the present utility model.
Below in conjunction with accompanying drawing and concrete execution mode essentiality content of the present utility model is described in further detail.
This lightning protection device mainly is made up of casing and lightning-protection module, and lightning-protection module comprises winding shape iron core and the coil L that is wound on the iron core, and this device seals in a pair of circuit during operation, is provided with two groups of coil (L on its iron core
1, L
1') and (L
2, L
2'), and the number of turn of two groups of coils is identical, around to identical.Coil top A, A ' meet gas discharge tube (P
1P
2), from two groups of coils, respectively draw tap B, B ' after, respectively through piezo-resistance R
1And R
2Ground connection, load R draws from terminal C, the C ' of two groups of coils, seals in avalanche diode (D at terminal C, the C ' of coil simultaneously
1D
2D
3D
4), avalanche diode (D
1D
2D
3D
4) terminal ground connection.During operate as normal, the electric current I that transmits in the circuit
1With I
2Oppositely, I
1The φ that produces
1With I
2The φ that produces
2Direction is opposite, the total magnetic flux φ in the iron core=φ
1-φ
2=0, the induced voltage on the coil is zero, does not have voltage drop.During the thunderbolt circuit, I
1With I
2Direction is identical, at this moment φ=φ
1+ φ
2, the voltage on each coil is reduced to self-induction and mutual induced EMF sum, and the multiplication of total inductance amount is high-impedance state to the high frequency lightning wave.When the invasion of lightning wave road along the line, when arriving coil front-end A, A ' at 2, L
1, L
2Be high resistant and cause the full normal reflection of lightning wave, the voltage wave multiplication makes gas discharge tube (P
1P
2) discharge with the easier action in gap, make most of energy go into ground, part seals in the energy of follow-up inductance at L
1', L
2' reflection under make the piezo-resistance action message at B, a B ' place, make the energy that penetrates go into ground, seal in L at last
1' L
2' energy make avalanche diode (D
1D
2D
3D
4) action, the characteristics of its intermediate gap are that the afterflow capacity is big, but speed is slow, are the first line of defence (thick anti-), it and L
1, L
2Cooperate, can hinder the pace of lightning wave greatly, improve the reliability of gap action, give full play to the effect of the first line of defence.Piezo-resistance R
1And R
2Responsiveness rapider, can be the lightning wave that bleeds from the first line of defence at L
1', L
2' obstruction under, introduce the earth, L by it
1', L
2' with piezo-resistance R
1And R
2Cooperating easier action, is defence line, second road.The three lines of defence is avalanche diode (D
1D
2D
3D
4), the same order of magnitude of response time of it and integrated circuit can be introduced the earth fast leaking the lightning wave that advances.The first line of defence speed is slow, but capacity is big, and defence line, second road capacity is moderate, and speed is also moderate, and three lines of defence speed is fast, but easily little, and the three lines of defence co-ordination can be given full play to advantage separately, lightning wave by resistance, let out two kinds of methods and isolate.
Claims (2)
1. lightning protection device, it mainly is made up of casing and lightning-protection module, lightning-protection module comprises winding shape iron core and the coil that is wound on the iron core, device seals in a pair of circuit during operation, it is characterized in that: be provided with at least two group coils on iron core, coil top connects gas discharge tube, and from every group of coil, draw tap after piezo-resistance ground connection, load is drawn from the end of two groups of coils, and the end at coil seals in avalanche diode, the other end ground connection of avalanche diode simultaneously.
2. lightning protection device according to claim 1 is characterized in that: described two groups of coils seal in respectively in the circuit, and the number of turn of two groups of coils is identical, around to identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97203321 CN2309007Y (en) | 1997-04-21 | 1997-04-21 | Lightning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97203321 CN2309007Y (en) | 1997-04-21 | 1997-04-21 | Lightning protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2309007Y true CN2309007Y (en) | 1999-02-24 |
Family
ID=33924214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97203321 Expired - Fee Related CN2309007Y (en) | 1997-04-21 | 1997-04-21 | Lightning protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2309007Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100438254C (en) * | 2006-04-12 | 2008-11-26 | 叶林 | Thunderstroke protection circuit capable of avoiding being reliably protecting electric net power supply thander struck by directly |
-
1997
- 1997-04-21 CN CN 97203321 patent/CN2309007Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100438254C (en) * | 2006-04-12 | 2008-11-26 | 叶林 | Thunderstroke protection circuit capable of avoiding being reliably protecting electric net power supply thander struck by directly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |