CN109038221A - There is the active overvoltage protection gap of plug function under gaseous environment - Google Patents
There is the active overvoltage protection gap of plug function under gaseous environment Download PDFInfo
- Publication number
- CN109038221A CN109038221A CN201810853656.6A CN201810853656A CN109038221A CN 109038221 A CN109038221 A CN 109038221A CN 201810853656 A CN201810853656 A CN 201810853656A CN 109038221 A CN109038221 A CN 109038221A
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- target
- overvoltage protection
- protection gap
- cyclic annular
- gaseous environment
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/20—Means for starting arc or facilitating ignition of spark gap
- H01T1/22—Means for starting arc or facilitating ignition of spark gap by the shape or the composition of the electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/02—Details
Abstract
There is the active overvoltage protection gap of plug function, including air pressure is 10 under gaseous environment0~103Or 104~5 × 105The cavity of Pa; the discharging gap constituted between top electrode, cyclic annular target is provided in cavity; discoid trigger electrode is installed in the cavity; cyclic annular insulating dielectric materials are installed between trigger electrode and target; the surface-discharge trigger that active overvoltage protection gap is constituted between trigger electrode, surface insulation dielectric material and target forms surface flashover discharge interface; surface flashover discharge interface is vertical or at an acute angle with the lower surface of target, while being equipped with shielding case in the upper insulation shell around top electrode, target.Top electrode, target, trigger electrode stretch out the plug being externally electrically connected.The present invention can reduce the pulse breakdown voltage in overvoltage protection gap, and have response characteristic, stronger power frequency continued flow rejection ability and the longer service life being exceedingly fast.
Description
Technical field
The present invention relates to the high-performance overvoltage protection gap of a kind of electronics and the communications field, in particular to a kind of Rings
There is the active overvoltage protection gap of plug function under border.
Background technique
High-performance overvoltage protection gap is the key that electronics and communication overvoltage protection device, is used for overvoltage both at home and abroad
The active overvoltage protection gap of protection mostly uses greatly field to cause triggering mode or field distortion triggering mode, so that active mistake
The voltage protection level in voltage protection gap is generally not too high, between pulse breakdown voltage and dc breakdown voltage pressure ratio
Generally higher than 1,1.1~1.5 or so.Patent of invention ZL 2,006 1 0104775.9 is disclosed to be had under a kind of vacuum environment
The overvoltage protection of edge flashing, technical characteristic are on " the surface of two main electrode contacts in overvoltage protection gap
It is respectively provided with there are two groove, flashover stick is installed in two grooves, when lightning surge occurs, the master in overvoltage protection gap
Electrode is released the energy of lightning current by edge flashing stick, but also results in the surface contamination and consumption of edge flashing stick simultaneously, from
And the service life in overvoltage protection gap is caused to be affected, it is even more important that the presence of edge flashing stick cannot reduce
The pressure ratio in overvoltage protection gap, while in overvoltage protection gap, pulse breakdown voltage is reduced, voltage protection level is promoted,
The dc breakdown voltage in overvoltage protection gap also decreases, and the safety of normal work reduces, therefore, between overvoltage protection
The performance boost of gap is limited.
With electronics and the growth requirement for the technologies such as communicating, higher want is proposed to high-performance overvoltage protection gap
It asks, comprising: (1) dc breakdown voltage is high, pulse breakdown voltage is low.(2) lightning surge fast response time, with rear class or other
The energy of overvoltage protection device distributes and cooperation precision is high；(3) discharge capacity and long working life；(4) easy to connect, have
Function is plugged at any time.Currently, overvoltage protection gap is not met by above-mentioned requirements, there are also to be hoisted for performance indicator.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, provide it is a kind of have high dc breakdown voltage,
Low pulse breakdown voltage, lightning surge fast response time, with rear class or other type overvoltage protection bandgap energies distribution and
There is the active overvoltage protection gap of plug function under the good gaseous environment of fiting effect.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: including upper insulation shell, lower insulation shell, upper end
The air pressure that flange and lower end flanges are constituted is 100~103Or 104~5 × 105The cavity of Pa, is provided with is mounted in the cavity
Top electrode in upper flanges is equipped with cyclic annular target, top electrode and ring between upper insulation shell and lower insulation shell
Main discharge gap is constituted between shape target, the effect of being dielectrically separated from has been installed between lower end flanges and cyclic annular target
Annular surface discharge insulating dielectric materials, lower end flanges, annular surface electric discharge insulating dielectric materials and cyclic annular target it
Between constitute the surface-discharge trigger in active overvoltage protection gap and form surface flashover discharge interface, surface flashover discharge
Interface and the cyclic annular lower surface of target are vertical or at an acute angle, and upper flanges, cyclic annular target and lower end flanges have respectively
Top electrode connection terminal, target connection terminal and the trigger electrode used as triggering of stretching, top electrode connection terminal,
Target connection terminal and as the trigger electrode that uses of triggering for connecting lightning surge or switching overvoltage passes through master
Dynamic emitter coupled logic circuit couples the thunder energy to come, while being equipped with shielding case in the upper insulation shell around top electrode.
The lower surface of the cyclic annular target and the upper surface of annular surface electric discharge insulating dielectric materials are in close contact,
The upper surface of lower end flanges and the lower surface of annular surface electric discharge insulating dielectric materials are in close contact.
The annular diameters of the cyclic annular target are 3-6mm.
The cyclic annular target is mounted on the junction of upper and lower insulation shell, with a thickness of 3-6mm.
The annular surface flashover insulating dielectric materials are mounted on lower flange center, its structural parameters is internal diameter 5-
12mm, ring width 4-10mm, the polytetrafluoroethylene (PTFE) of height 5-15mm, semiconductor or ceramic material.
The surface flashover discharge interface is vertical with the upper surface of lower end flanges or acute angle in 30 °~70 °.
The top electrode connection terminal, target connection terminal and the trigger electrode used as triggering length,
Width and thickness is respectively 6-10mm, 2-8mm and 0.5-3mm.
The shielding case is made of oxygen-free copper.
Active overvoltage protection gap of the invention has the remarkable advantage of the following aspects: (1) actively coupling touching
The design of structure is sent out so that the trigger in active gas overvoltage protection gap is discharged with extremely strong initial trigger carrier
Ability, so that active overvoltage protection gap can drop while not influencing overvoltage protection gap dc breakdown voltage
The pulse breakdown voltage in low overvoltage protection gap, and there is the lightning surge response characteristic being exceedingly fast；(2) cyclic annular intermediate electricity
Triggering mode between pole and lower end flanges is surface-discharge triggering, and the interface of surface flashover discharge and lower end flanges or ring-type
The lower surface of target is vertical, and the pulsed arc path between two top electrode, cyclic annular target main electrodes is parallel,
The metal vapor deposition that can prevent pulsed arc from generating substantially increases overvoltage protection gap in dielectric surface flashover dielectric surface
Service life.The present invention can solve defect existing for existing overvoltage protection gap, and have connect-disconnect structure, be very suitable to
The occasion protected applied to different application in electronics and communications field lightning surge or switching overvoltage.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of another embodiment of the present invention.
In figure, insulation shell on 1,2 lower insulation shells, 3 top electrodes, 4 targets, 5 upper flanges, 6 lower end flanges, 7
Annular surface electric discharge insulating dielectric materials, 8 shielding cases, 9 surface flashover discharge interfaces, 10 top electrode connection terminals, 11 centre electricity
Pole connection terminal, 12 trigger electrodes used as triggering.
Specific embodiment
Structural principle and working principle of the invention are described in further detail with reference to the accompanying drawings and embodiments.
Embodiment 1, referring to Fig. 1, the present invention includes upper insulation shell 1, lower insulation shell 2, upper flanges 5 and lower end flanges
6 air pressures constituted are 100~103Or 104~5 × 105The cavity of Pa is provided with is mounted in upper flanges 5 in the cavity
Top electrode 3 is equipped with a thickness of 3-6mm ring-type target 4, top electrode 3 between upper insulation shell 1 and lower insulation shell 2
Main discharge gap is constituted between cyclic annular target 4, insulation has been installed between lower end flanges 6 and cyclic annular target 4
The annular surface flashover insulating dielectric materials 7 of the internal diameter 5-12mm of buffer action, ring width 4-10mm, height 5-15mm, lower hold-carrying
The table in active overvoltage protection gap is constituted between orchid 6, annular surface flashover insulating dielectric materials 7 and cyclic annular target 4
Face electric discharge trigger forms surface flashover discharge interface 9, the lower surface at surface flashover discharge interface 9 and cyclic annular target 4
Vertically, the pulsed arc path and between main electrode is parallel, and the cyclic annular target 4 that annular diameters are 3-6mm is covered on
On annular surface flashover insulating dielectric materials 7, the metal vapor deposition for effectivelying prevent pulsed arc to generate is in dielectric surface flashover medium
Surface, so that active overvoltage protection gap, which is removed, has high voltage protection level, it is important that active protection can be made
The service life in gap greatly improves.Upper flanges 5, cyclic annular target 4 and lower end flanges 6 have the length of stretching, width respectively
Degree and thickness are respectively the top electrode connection terminal 10, target connection terminal 11 and work of 6-10mm, 2-8mm and 0.5-3mm
To trigger the trigger electrode 12 used, top electrode connection terminal 10, target connection terminal 11 and the touching used as triggering
Power generation pole 12 is used to connect lightning surge or switching overvoltage and couples the thunder energy to come by active emitter coupled logic circuit,
Shielding case 8 is installed in the upper insulation shell 1 around top electrode 3 simultaneously, can prevent metallic vapour from spreading and be deposited on insulation
On sealing shell 1,2, the short circuit of top electrode 3 and cyclic annular target 4 is caused.
Embodiment 2, referring to fig. 2, annular surface electric discharge 7 lower part of insulating dielectric materials of the invention are cylindrical type, top circle
The inside of column is trapezoidal, annular surface discharge insulating dielectric materials 7 and cyclic annular target 4, lower end flanges trigger electrode 6 it is upper
Surface flashover discharge interface 9, surface flashover discharge interface 9 and the upper surface of lower end flanges 6 are formed between the contact point on surface
Acute angle is 30 °~70 °.
The most significant feature that the present invention is different from existing overvoltage protection gap is: using cyclic annular target, disk
The surface-discharge trigger of shape trigger electrode and annular surface electric discharge insulating dielectric materials composition, surface-discharge insulating dielectric materials
It can be polytetrafluoroethylene (PTFE), semiconductor or ceramic material etc..The design of trigger architecture is actively coupled so that active overvoltage
The trigger of portable protective gaps has extremely strong initial trigger carrier releasability, reduces the pulse breakdown in overvoltage protection gap
Voltage, and there is the overvoltage response characteristic being exceedingly fast；Meanwhile the dielectric surface flashover of the dielectric surface flashover trigger of this project design is put
Electric interface or path are vertical with lower electrode surface (or at acutance), and the pulsed arc path between main electrode it is parallel (or at
Acute angle), deposition of the metallic vapour for effectively avoiding pulsed arc from generating on dielectric surface flashover dielectric surface greatly improves active
The service life of portable protective gaps trigger and portable protective gaps, it is of the invention based under gaseous environment with anti-metallic vapour pollution
The active overvoltage protection gap of cyclic annular trigger architecture has high dc breakdown voltage, low pulse breakdown voltage, extremely short
The distinguishing features such as overvoltage response time, long life, and there is connect-disconnect structure simultaneously, be highly suitable for electronics and lead to
The occasion of the Lightning Impulse Overvoltage Protections such as letter, electronic circuit.
Claims (8)
1. having the active overvoltage protection gap of plug function under a kind of gaseous environment, it is characterised in that: including upper insulation
The air pressure that shell (1), lower insulation shell (2), upper flanges (5) and lower end flanges (6) are constituted is 100~103Or 104~5 ×
105The cavity of Pa is provided with the top electrode (3) being mounted on upper flanges (5) in the cavity, upper insulation shell (1) and under
It is equipped between insulation shell (2) cyclic annular target (4), constitutes main discharge between top electrode (3) and cyclic annular target (4)
Gap has been equipped with the annular surface electric discharge insulation for the effect of being dielectrically separated between lower end flanges (6) and cyclic annular target (4)
Dielectric material (7) is constituted between lower end flanges (6), annular surface electric discharge insulating dielectric materials (7) and cyclic annular target (4)
The surface-discharge trigger in active overvoltage protection gap forms surface flashover discharge interface (9), surface flashover discharge circle
Face (9) and the lower surface of cyclic annular target (4) are vertical or at an acute angle, upper flanges (5), cyclic annular target (4) and lower end
Flange (6) has the top electrode connection terminal (10), target connection terminal (11) and the touching used as triggering of stretching respectively
It generates electricity pole (12), top electrode connection terminal (10), target connection terminal (11) and the trigger electrode used as triggering
(12) thunder energy to come is coupled by active emitter coupled logic circuit for connecting lightning surge or switching overvoltage, simultaneously
Shielding case (8) are installed in upper insulation shell (1) around top electrode (3).
2. having the active overvoltage protection gap of plug function, feature under gaseous environment according to claim 1
Be: the lower surface of the cyclic annular target (4) and the upper surface of annular surface electric discharge insulating dielectric materials (7) closely connect
The lower surface of touching, the upper surface of lower end flanges (6) and annular surface electric discharge insulating dielectric materials (7) is in close contact.
3. having the active overvoltage protection gap of plug function, feature under gaseous environment according to claim 2
Be: the annular diameters of the cyclic annular target (4) are 3-6mm.
4. having the active overvoltage protection gap of plug function, feature under gaseous environment according to claim 1
Be: the cyclic annular target is mounted on the junction of upper and lower insulation shell (1,2), with a thickness of 3-6mm.
5. having the active overvoltage protection gap of plug function, feature under gaseous environment according to claim 1
Be: the annular surface flashover insulating dielectric materials (7) are mounted on lower flange (6) center, its structural parameters is interior
Diameter 5-12mm, ring width 4-10mm, the polytetrafluoroethylene (PTFE) of height 5-15mm, semiconductor or ceramic material.
6. having the active overvoltage protection gap of plug function, feature under gaseous environment according to claim 1
Be: the surface flashover discharge interface (9) is vertical with the upper surface of lower end flanges (6) or acute angle in 30 °~70 °.
7. having the active overvoltage protection gap of plug function, feature under gaseous environment according to claim 1
It is: top electrode connection terminal (10), target connection terminal (11) and the trigger electrode used as triggering
(12) length, width and thickness is respectively 6-10mm, 2-8mm and 0.5-3mm.
8. having the active overvoltage protection gap of plug function, feature under gaseous environment according to claim 1
Be: the shielding case (8) is made of oxygen-free copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810853656.6A CN109038221B (en) | 2018-07-30 | 2018-07-30 | There is the active overvoltage protection gap of plug function under gaseous environment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810853656.6A CN109038221B (en) | 2018-07-30 | 2018-07-30 | There is the active overvoltage protection gap of plug function under gaseous environment |
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| Publication Number | Publication Date |
|---|---|
| CN109038221A true CN109038221A (en) | 2018-12-18 |
| CN109038221B CN109038221B (en) | 2019-11-08 |
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| CN201810853656.6A Active CN109038221B (en) | 2018-07-30 | 2018-07-30 | There is the active overvoltage protection gap of plug function under gaseous environment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113629683A (en) * | 2021-07-22 | 2021-11-09 | 西安交通大学 | Intelligent combined protection assembly with pulse arc pollution prevention structure for trigger type overvoltage protection gap |
| CN113782286A (en) * | 2021-07-22 | 2021-12-10 | 西安交通大学 | Surface trigger type controllable lightning arrester composed of surface trigger type overvoltage control switch and zinc oxide lightning arrester |
| CN113783172A (en) * | 2021-07-22 | 2021-12-10 | 西安交通大学 | Intelligent combined protection assembly with external series triggering type overvoltage protection gap |
| CN113782285A (en) * | 2021-07-22 | 2021-12-10 | 西安交通大学 | Controllable lightning arrester based on trigger type overvoltage control switch with antifouling structure |
| CN113782287A (en) * | 2021-07-22 | 2021-12-10 | 西安交通大学 | Controllable lightning arrester of trigger type overvoltage control switch with field distortion structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113629683A (en) * | 2021-07-22 | 2021-11-09 | 西安交通大学 | Intelligent combined protection assembly with pulse arc pollution prevention structure for trigger type overvoltage protection gap |
| CN113782286A (en) * | 2021-07-22 | 2021-12-10 | 西安交通大学 | Surface trigger type controllable lightning arrester composed of surface trigger type overvoltage control switch and zinc oxide lightning arrester |
| CN113783172A (en) * | 2021-07-22 | 2021-12-10 | 西安交通大学 | Intelligent combined protection assembly with external series triggering type overvoltage protection gap |
| CN113782285A (en) * | 2021-07-22 | 2021-12-10 | 西安交通大学 | Controllable lightning arrester based on trigger type overvoltage control switch with antifouling structure |
| CN113782287A (en) * | 2021-07-22 | 2021-12-10 | 西安交通大学 | Controllable lightning arrester of trigger type overvoltage control switch with field distortion structure |
| CN113629683B (en) * | 2021-07-22 | 2023-08-01 | 西安交通大学 | Intelligent combined protection assembly with trigger type overvoltage protection gap of pulse arc pollution prevention structure |
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| CN109038221B (en) | 2019-11-08 |
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