CN206041478U - Electromagnetic pulse protection ware - Google Patents
Electromagnetic pulse protection ware Download PDFInfo
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- CN206041478U CN206041478U CN201620863263.XU CN201620863263U CN206041478U CN 206041478 U CN206041478 U CN 206041478U CN 201620863263 U CN201620863263 U CN 201620863263U CN 206041478 U CN206041478 U CN 206041478U
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Abstract
The utility model discloses an electromagnetic pulse protection ware, it includes the low frequency protective unit and connects in the medium -high frequency protective unit of low frequency protective unit output, the low frequency protective unit includes arrester, time delay inductance and piezo -resistor, time delay inductance extension electromagnetic pulse operational time, and arrester and piezo -resistor absorb electromagnetic pulse low frequency energy, the medium -high frequency protective unit includes LC resonant circuit, filter inductor and feed through wave filter, and LC resonant circuit absorbs electromagnetic pulse intermediate frequency energy, and filter inductor absorbs electromagnetic pulse intermediate frequency and high frequency energy, and the feed through wave filter absorbs electromagnetic pulse high frequency energy. Compared with the prior art, the utility model discloses a delay, strain modes such as wave absorption, resonance bypass, RF shielding, make electromagnetic pulse current decay to the normal working range by protective apparatus. Furthermore, the utility model discloses the function of simultaneously integrated lightning protection and electromagnetic compatibility wave filter has realized the miniaturization of equipment and has integrated.
Description
Technical field
This utility model belongs to electronic technology field, and more specifically, this utility model is related to a kind of Spark gap
Device.
Background technology
Electromagnetic impulse radiation be it is a kind of by natural (such as sunspot aggravating activities) or it is artificial (as ignite ELECTROMAGNETIC BOMB or
Person's nuclear bomb) the violent electromagnetic pulse signal that produces.Electromagnetic impulse radiation has high, fast, covering frequence width action time of intensity etc.
Feature.
Research to electromagnetic pulse waveform finds that its waveform rising edge is very short, generally only several ns, and intensity are big, peak
Value is more than 5kA.When the electromagnetic pulse percussion of this waveform is to in electric line or equipment, even if equipment is mounted with to take shelter from the thunder
Device, as the speed of electromagnetic pulse is significantly larger than the response speed of spark gap, (thunderbolt impulse speed is us grades, and electromagnetic pulse is fast
Degree is 1000 times of thunderbolt impulse speed), spark gap also cannot react in time and make protection action, and this causes the electricity consumption of rear end
The impact of circuit and equipment directly facing high intensity EMP, the impaired risk of system overload are high.
Additionally, the frequency coverage of electromagnetic pulse is far longer than thunderbolt pulse, the dot frequency that partly declines of pulse of being struck by lightning
500Hz, and the dot frequency that partly declines of electromagnetic pulse is 1MHz.Therefore, what electromagnetic pulse was produced is not only transient state high energy impact events
Problem, but also while high frequency, the electromagnetic interference problem of high intensity is produced, under this impact, system not only faces excessively stream wind
Danger, will also solve the problems, such as the electromagnetic interference shielding of system sensitive equipment.
For fire point is above the ground level the High aititude electromagnetic impulse radiation of more than 40km, its coverage rate is extremely wide, when detonation it is high
Spend for 500km when, it might even be possible to cover the whole U.S..Electromagnetic Sources pass through radiation direction overland propagation high frequency, the electromagnetism of high intensity
Pulse, after being radiated without the electric power of protection, communication, control, detecting system, it would be possible to failure occurs and cannot even recover.
Foreign countries, the especially U.S. especially pay attention to Spark gap recent years, have worked out correlative protection standard, to guarantee military setting
Apply, the reliability of the equipment in communication system, the national security such as power system and people's livelihood field in the case where attacking in the face of electromagnetic pulse.
China for Spark gap attention and awareness relatively fall behind, it is at present domestic also for electricity
The effective solution of magnetic field impulse protection and product design, and there is no the level of protection of correlation.General equipment is only installed lightning-arrest
Device suppresses the purpose of thunderbolt, only some special sensitive equipments to reach, and just configuring electromagnetic compatibility wave filter is prevented with increasing
The function of High-frequency Interference.But face electromagnetic pulse, spark gap has an excessively slow problem of response speed, and electromagnetic compatibility wave filter without
Method carries transient state high-energy, cannot more solve the problems, such as that full frequency band high-energy is filtered.
In view of this, it is necessary to which a kind of electromagnetic pulse protector that can solve the problem that the problems referred to above is provided.
Utility model content
The purpose of this utility model is：Overcome the deficiencies in the prior art, there is provided one kind can effectively prevent power supply and lead to
Letter circuit is subject to electromagnetic pulse to impact the electromagnetic pulse protector for affecting.
To achieve these goals, this utility model provides a kind of electromagnetic pulse protector, and which includes low frequency protective unit
With the medium-high frequency protective unit for being connected to low frequency protective unit outfan；Low frequency protective unit include spark gap, time delay inductance and
Varistor, time delay inductance extend electromagnetic pulse action time, and spark gap and varistor absorb electromagnetic pulse low frequency energy；In
High frequency protective unit includes LC resonance circuits, filter inductance and feed-through filter, and LC resonance circuits absorb electromagnetic pulse intermediate frequency energy
Amount, filter inductance absorb electromagnetic pulse intermediate frequency and high-frequency energy, and feed-through filter absorbs electromagnetic pulse high-frequency energy.
Improve as one kind of this utility model electromagnetic pulse protector, the electromagnetic pulse protector also includes radio frequency screen
Layer is covered, radio shielding layer is used for sealing the radio frequency electromagnetic of medium-high frequency protective unit radiation.
Improve as one kind of this utility model electromagnetic pulse protector, the feed-through filter includes that the first feedthrough is filtered
, on radio shielding layer, medium-high frequency is protected for device and the second feed-through filter, the first feed-through filter and the second feed-through filter
In radio shielding layer, electromagnetic pulse enters medium-high frequency protective unit from the first feed-through filter to the other parts of unit, then
Exported by the second feed-through filter.
Improve as one kind of this utility model electromagnetic pulse protector, the time delay inductance, the first feed-through filter, filter
Ripple inductance, the second feed-through filter are sequentially connected in series.
Improve as one kind of this utility model electromagnetic pulse protector, before described spark gap one end is connected to time delay inductance
End, other end ground connection；Described varistor one end is connected between time delay inductance and the first feed-through filter, and varistor is another
End ground connection.
Improve as one kind of this utility model electromagnetic pulse protector, the LC resonance circuits are LC series resonances electricity
Road, its one end are connected between feed-through filter and filter inductance, other end ground connection.
Improve as one kind of this utility model electromagnetic pulse protector, the medium-high frequency protective unit also includes in parallel
Filter capacitor and resistance, the filter inductance include that one end of the filter inductance of at least two series connection, filter capacitor and resistance connects
It is connected between the filter inductance of any two series connection, the other end ground connection of filter capacitor and resistance.
Improve as one kind of this utility model electromagnetic pulse protector, the time delay inductance is configured with the first coupling electricity
Sense, the first coupling inductance are used for sharing the magnetic flux of time delay inductance.
Improve as one kind of this utility model electromagnetic pulse protector, in the filter inductance of the series connection, at least one
Filter inductance is configured with the second coupling inductance, and the second coupling inductance is used for sharing magnetic flux.
Improve as one kind of this utility model electromagnetic pulse protector, the feed-through filter includes that the first feedthrough is filtered
Device, on radio shielding layer, the other parts of medium-high frequency protective unit are in radio shielding layer, electric for the first feed-through filter
Magnetic field impulse enters radio shielding layer and medium-high frequency protective unit by the first feed-through filter.
Compared with prior art, this utility model electromagnetic pulse protector has following beneficial technique effect：By
Low frequency phase makes varistor fully absorb the low frequency energy of pulse using time delay, coordinates in the medium-high frequency stage and is inhaled using filtering
The mode filtered pulse medium-high frequency energy such as receipts, resonance bypass, capacitive bypass, and it is dry to arrange radio shielding area suppression radio-frequency radiation
Disturb, pulse current is decayed to by the normal range of operation of protection equipment, and the electromagnetic pulse intensity that can be protected is high, can protect arteries and veins
The instantaneous action time of punching is short, can adapt to the covering frequence width of pulse.Additionally, this utility model has lightning protection and electromagnetism concurrently simultaneously
The function of Compatibility filter, can substitute thunder resisting equipment and electromagnetic compatibility equipment, realize the miniaturization of equipment and integrated.
Description of the drawings
With reference to the accompanying drawings and detailed description, to this utility model electromagnetic pulse protector and its Advantageous Effects
It is described in detail.
Schematic diagrams of the Fig. 1 for the circuit of this utility model electromagnetic pulse protector.
Specific embodiment
In order that the purpose of this utility model, technical scheme and technique effect become apparent from understanding, below in conjunction with accompanying drawing and
Specific embodiment, is further elaborated to this utility model.It should be appreciated that concrete described in this specification
Embodiment is not intended to limit this utility model just for the sake of explaining this utility model.
In description of the present utility model, term " on ", D score, "front", "rear", "left", "right", " vertical ", " level ",
The statement of the indicating position such as " top ", " bottom ", " interior ", " outward " or position relationship be based on orientation shown in the drawings or position relationship,
It is not to indicate or imply specific installation and operative orientation that described device or element must have, therefore it is not intended that
To restriction of the present utility model.
In description of the present utility model, low and high level is realized based on pullup or pulldown voltage in circuit diagram, is not
Indicate or imply that described level has specific current potential, therefore it is not intended that to restriction of the present utility model.
Refer to shown in Fig. 1, this utility model electromagnetic pulse protector includes low frequency protective unit 100 and is connected to low frequency
The medium-high frequency protective unit 200 of 100 outfan of protective unit；Low frequency protective unit 100 includes spark gap 10,20 and of time delay inductance
Varistor 30, time delay inductance 20 extend electromagnetic pulse action time, and it is low that spark gap 10 and varistor 30 absorb electromagnetic pulse
Frequency energy；Medium-high frequency protective unit 200 includes LC resonance circuits, filter inductance and feed-through filter, and LC resonance circuits absorb electricity
Magnetic field impulse intermediate frequency energy, filter inductance absorb electromagnetic pulse intermediate frequency and high-frequency energy, and feed-through filter absorbs electromagnetic pulse high frequency
Energy.
Low frequency protective unit 100 is protected mainly for the low frequency part below electromagnetic pulse 10kHz.Low frequency protection is single
Unit 100 includes spark gap 10, time delay inductance 20 and varistor 30.
The front end of time delay inductance 20 is electromagnetic pulse protector and the input of low frequency protective unit 100, time delay inductance 20
Rear end for low frequency protective unit 100 outfan, be connected with the input of medium-high frequency protective unit 200.Time delay inductance 20 is adopted
With the magnetic material with high saturated characteristic and technological design, to adapt to the situation of excessive saturation current.In order to ensure time delay electricity
20 in different application scenarios, particularly steady operation in the case of very high current, while device miniaturization can be taken into account for sense
Require, the coupling inductance in parallel with time delay inductance 20 can be arranged on flux path according to specific requirement of shelter.Coupling inductance
Connection resistance reduces magnetic flux density when time delay inductance 20 works to share the magnetic flux of time delay inductance 20.The ginseng of coupling inductance
Number characteristic can be selected and be configured according to different application scenarios, to maximize saturation performance, for example, can configure suitable
Coupling inductance meeting the demand of the dash current of 5kA peak values, the impulse speed of ns levels.
Spark gap 10 is made up of gas-discharge tube or transient diode, before one end connection time delay inductance 20 of spark gap 10
End, other end ground connection.A part of low frequency energy of electromagnetic pulse is bypassed and introduces the earth by spark gap 10.
The rear end of one end connection time delay inductance 20 of varistor 30, other end ground connection.Varistor 30 can absorb electricity
Most low frequency energy in magnetic field impulse.
Medium-high frequency protective unit 200 includes that the first feed-through filter 40 being sequentially connected in series, the first filter inductance 60, second are filtered
Ripple inductance 90, the second feed-through filter 42, and LC series resonant circuits 50, filter capacitor 70 and the resistance 80 for bypassing.
Input of the input of the first feed-through filter 40 for medium-high frequency protective unit 200, with low frequency protective unit 100
Outfan be connected.The outfan of the second feed-through filter 42 is the defeated of electromagnetic pulse protector and medium-high frequency protective unit 200
Go out end.First feed-through filter 40 and the second feed-through filter 42 can absorb a part of high frequency and the radio frequency energy of electromagnetic pulse
Amount, reduces the coupling risk of electromagnetic pulse protector input and output.
One end of LC series resonant circuits 50 is connected between the first feed-through filter 40 and the first filter inductance 60, another
End ground connection.LC series resonant circuits 50 mainly by the intermediate frequency energy-bypass system of 10kHZ-100kHz in electromagnetic pulse and introduce the earth.
First filter inductance 60 and the second filter inductance 90 adopt the magnetic material with high saturated characteristic and technological design,
Disclosure satisfy that the requirement of 300% rush of current of transient error.Meanwhile, the first filter inductance 60 and the second filter inductance 90 also have
Good high frequency characteristics, can steady operation in 1MHz, effectively realize the purpose of decay dash current.First filter inductance, 60 He
Second filter inductance 90 mainly absorbs a part of intermediate frequency of electromagnetic pulse and high frequency (to 5MHz) energy.Will according to specific protection
Ask, the second filter inductance 90 can configure coupling inductance, effect and the time delay inductance 20 of the coupling inductance of the second filter inductance 90
Coupling inductance it is identical, do not repeat herein.It should be noted that according to specific requirement of shelter, the second filter inductance is after 90s also
Can connect some filter inductances, to expand filter range, strengthen filter effect.
One end of filter capacitor 70 and resistance 80 is connected between the first filter inductance 60 and the second filter inductance 90, another
End ground connection.Filter capacitor 70 is by the part intermediate frequency energy-bypass system of electromagnetic pulse and introduces the earth.
Medium-high frequency protective unit 200 is located in radio shielding area 300, radio shielding of the radio shielding area 300 by closing
Shell is realized.Medium-high frequency protective unit 200 is shielded to extraradial radio-frequency (RF) energy and is sealed and is absorbed in its housing by radio shielding shell
In, to prevent radio frequency electromagnetic, sensitive equipment is interfered to external world.First feed-through filter 40 and the second feed-through filter 42
On radio shielding shell, the other parts of medium-high frequency protective unit 200 are inside radio shielding shell.It should be noted that
According to specific requirement of shelter, it is also possible to only arrange the first feed-through filter 40 on radio shielding shell, and be not provided with the second feedback
Bandpass filter 42.
Electromagnetic pulse protector is connected to by the front end of protection equipment circuit.
When electromagnetic pulse impact does not occur, low frequency protective unit 100 is in holding state, medium-high frequency protective unit 200
It is in running order.Now medium-high frequency protective unit 200 provides the function of conventional electromagnetic Compatibility filter, and radio shielding area
300 play shielding action, suppress external Radio frequency interference.
When electromagnetic pulse impact occurs, the high intensity pulses electric current of transient state, electromagnetism arteries and veins in electromagnetic pulse protector, is poured in
The Spark gap function of rushing protector is activated, and low frequency protective unit 100 and medium-high frequency protective unit 200 enter work
State.A part of low frequency energy of pulse is bypassed by spark gap 10.Time delay inductance 20 extends the rising edge of residual impulse waveform, makes
Obtaining varistor 30 has time enough to sponge most of low frequency energy (below the 10kHz) of pulse.It is remaining in pulse
Intermediate frequency and high-frequency energy enter medium-high frequency protective unit 200, and a part of high frequency and radio-frequency (RF) energy are inhaled by the first feed-through filter 40
Receive, LC series resonant circuits 50 and filter capacitor 70 are by the intermediate frequency energy-bypass system of 10kHz-100kHz, 60 He of the first filter inductance
Second filter inductance 90 by another part intermediate frequency and high frequency (to 5MHz) energy absorption, the second feed-through filter 42 by pulse most
High frequency and radio-frequency component afterwards absorbs (when being not provided with the second feed-through filter 42, pulse dump energy is directly exported).Finally, from
Electromagnetic pulse protector exports and enters and be less than the purpose of desired value (such as 10A) by the aftercurrent of protection equipment.
This utility model electromagnetic pulse protector has stronger motility, can be by adjusting coupling inductance, filtered electrical
Sense, the quantity of filter capacitor 70, feed-through filter and parameter, meet residual to high insertion loss and low output under different application occasion
The requirement of aftercurrent.When high insertion loss, such as frequency are more than 10kHz, insertion loss is more than 100dB.Low output aftercurrent,
For example export aftercurrent and be less than 1A.The pulse current that electromagnetic pulse protector can be protected is up to 20kA, can protect pulse
The instantaneous action time of electric current reaches ns grades.
Describe in detail as can be seen that relative to prior art, this utility model is at least to of the present utility model with reference to more than
With following beneficial technique effect：By enabling varistor 30 to fully absorb the low frequency of pulse in low frequency phase using time delay
Amount, coordinated using mode filtered pulse medium-high frequency energy such as filtering absorption, resonance bypass, capacitive bypass in the medium-high frequency stage, and
Radio shielding area 300 is set and suppresses radio-frequency radiation interference, pulse current is decayed to by the normal range of operation of protection equipment, and
Electromagnetic pulse intensity height (reaching 20kA) that can be protected, can protect the instantaneous action time short (reaching ns grades) of pulse, can
Adapt to the covering frequence width (reaching radio frequency grade) of pulse.Additionally, this utility model has lightning protection and electromagnetic compatibility filtering concurrently simultaneously
The function of device, can substitute thunder resisting equipment and electromagnetic compatibility equipment, realize the miniaturization of equipment and integrated.
According to above-mentioned principle, this utility model can also carry out appropriate change and modification to above-mentioned embodiment.Therefore,
This utility model is not limited to specific embodiment disclosed and described above, to some modifications and changes of the present utility model
Should also be as falling in scope of the claims of the present utility model.Although additionally, some are specific used in this specification
Term, but these terms are merely for convenience of description, do not constitute any restriction to this utility model.
Claims (10)
1. a kind of electromagnetic pulse protector, prevents including low frequency protective unit and the medium-high frequency for being connected to low frequency protective unit outfan
Shield unit；Low frequency protective unit includes spark gap, time delay inductance and varistor, when time delay inductance extends electromagnetic pulse effect
Between, spark gap and varistor absorb electromagnetic pulse low frequency energy；Medium-high frequency protective unit includes LC resonance circuits, filter inductance
And feed-through filter, LC resonance circuits absorption electromagnetic pulse intermediate frequency energy, filter inductance absorb electromagnetic pulse intermediate frequency and high-frequency energy
Amount, feed-through filter absorb electromagnetic pulse high-frequency energy.
2. electromagnetic pulse protector as claimed in claim 1, it is characterised in that：The electromagnetic pulse protector also includes radio frequency
Screen layer, radio shielding layer are used for sealing the radio frequency electromagnetic of medium-high frequency protective unit radiation.
3. electromagnetic pulse protector as claimed in claim 2, it is characterised in that：The feed-through filter includes that the first feedthrough is filtered
, on radio shielding layer, medium-high frequency is prevented for ripple device and the second feed-through filter, the first feed-through filter and the second feed-through filter
In radio shielding layer, electromagnetic pulse enters medium-high frequency protective unit from the first feed-through filter to the other parts of shield unit,
Exported by the second feed-through filter again.
4. electromagnetic pulse protector as claimed in claim 3, it is characterised in that：The time delay inductance, the first feed-through filter,
Filter inductance, the second feed-through filter are sequentially connected in series.
5. electromagnetic pulse protector as claimed in claim 4, it is characterised in that：Described spark gap one end is connected to time delay inductance
Front end, other end ground connection；Described varistor one end is connected between time delay inductance and the first feed-through filter, and varistor is another
One end is grounded.
6. electromagnetic pulse protector as claimed in claim 4, it is characterised in that：The LC resonance circuits are LC series resonances electricity
Road, its one end are connected between feed-through filter and filter inductance, other end ground connection.
7. electromagnetic pulse protector as claimed in claim 4, it is characterised in that：The medium-high frequency protective unit also includes parallel connection
Filter capacitor and resistance, the filter inductance includes one end of the filter inductance of at least two series connection, filter capacitor and resistance
It is connected between the filter inductance of any two series connection, the other end ground connection of filter capacitor and resistance.
8. electromagnetic pulse protector as claimed in claim 4, it is characterised in that：The time delay inductance is configured with the first coupling electricity
Sense, the first coupling inductance are used for sharing the magnetic flux of time delay inductance.
9. electromagnetic pulse protector as claimed in claim 7, it is characterised in that：In the filter inductance of the series connection, at least one
Individual filter inductance is configured with the second coupling inductance, and the second coupling inductance is used for sharing magnetic flux.
10. electromagnetic pulse protector as claimed in claim 2, it is characterised in that：The feed-through filter includes the first feedthrough
Wave filter, on radio shielding layer, the other parts of medium-high frequency protective unit are located at radio shielding layer to the first feed-through filter
Interior, electromagnetic pulse enters radio shielding layer and medium-high frequency protective unit by the first feed-through filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620863263.XU CN206041478U (en) | 2016-08-10 | 2016-08-10 | Electromagnetic pulse protection ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620863263.XU CN206041478U (en) | 2016-08-10 | 2016-08-10 | Electromagnetic pulse protection ware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206041478U true CN206041478U (en) | 2017-03-22 |
Family
ID=58308537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620863263.XU Active CN206041478U (en) | 2016-08-10 | 2016-08-10 | Electromagnetic pulse protection ware |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206041478U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116014695A (en) * | 2022-12-06 | 2023-04-25 | 中国电力科学研究院有限公司 | Strong electromagnetic pulse protection device for electric power secondary equipment and parameter determination method and system |
-
2016
- 2016-08-10 CN CN201620863263.XU patent/CN206041478U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116014695A (en) * | 2022-12-06 | 2023-04-25 | 中国电力科学研究院有限公司 | Strong electromagnetic pulse protection device for electric power secondary equipment and parameter determination method and system |
| CN116014695B (en) * | 2022-12-06 | 2023-09-08 | 中国电力科学研究院有限公司 | Strong electromagnetic pulse protection device for electric power secondary equipment and parameter determination method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 100025 2 unit 302, eight Li Zhuang North Li 312 building, Chaoyang District, Beijing. Patentee after: Xu Hui Address before: 519015 17C 22, Jida Bay Garden, Xiangzhou District, Zhuhai, Guangdong. Patentee before: Xu Hui |
|
| CP02 | Change in the address of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220520 Address after: 100085 office room b-309-3, floor 3, building 2, yard 1, Nongda South Road, Haidian District, Beijing Patentee after: Beijing Pulian Jiaxin Technology Development Co.,Ltd. Patentee after: Beijing ground network security technology Co., Ltd Address before: 100025 2 unit 302, eight Li Zhuang North Li 312 building, Chaoyang District, Beijing. Patentee before: Xu Hui |
|
| TR01 | Transfer of patent right |