CN204481325U - A kind of low pressure edge flashing triggered gap type overvoltage protection - Google Patents
A kind of low pressure edge flashing triggered gap type overvoltage protection Download PDFInfo
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- CN204481325U CN204481325U CN201520190505.9U CN201520190505U CN204481325U CN 204481325 U CN204481325 U CN 204481325U CN 201520190505 U CN201520190505 U CN 201520190505U CN 204481325 U CN204481325 U CN 204481325U
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Abstract
The utility model relates to a kind of protective device of overvoltage protection system, and particularly a kind of employing high-permitivity ceramics for overvoltage protection system is as the low pressure edge flashing triggered gap type overvoltage protection triggering medium.Main electrode and insulation crust, described main electrode comprises main electrode 1 and main electrode 2, main electrode 1 and main electrode 2 are separately positioned on the two ends of insulation crust, closing on main electrode 1 or main electrode 2 is provided with trigger electrode, trigger electrode and and its main electrode of closing between be provided with triggering medium, described main electrode, trigger electrode, triggering medium and insulation crust form confined space, are filled with medium in confined space; Resistor is connected with between described trigger electrode and the main electrode away from trigger electrode.This device can be operated in hypobaric, and structure is simple, has stable operation voltage.
Description
Technical field
The utility model relates to a kind of protective device of overvoltage protection system, and particularly a kind of employing high-permitivity ceramics for overvoltage protection system is as the low pressure edge flashing triggered gap type overvoltage protection triggering medium.
Background technology
In recent years, along with the develop rapidly of information-based industry, people are caused for the harm caused due to atmospheric over-voltage and switching overvoltage in system and has paid attention to greatly.The research starting comparatively morning of external clearance type overvoltage protecting device, as German PHOENIX, OBO, French CITEL etc.The clearance type overvoltage protecting device of Germany PHOENIX mainly adopts the electrode structure of traditional band goat's horn, has the overvoltage protecting device of air breakdown spark gap and has the overvoltage protecting device of air flashover spark gap.Its shortcoming is that operation voltage is unstable, and dispersiveness is larger.The product tape triggered gap type SPD (OVR T1) that ABB (China) Co., Ltd releases, main electrode is erietiform, between main electrode, introduce trigger electrode, produces sparkover initiation main electrode puncture by trigger electrode to main electrode.The triggering technique of current existing switching mode SPD mainly contains three types: capacitance network triggers, pulse transformer triggers and activated with energy.Capacitance network triggers and adopts trigger theory step by step, and this triggering technique is applicable to the switching mode SPD connected by multiple small―gap suture.It is a kind of application technology more widely that pulse transformer triggers, and be specially adapted to " single gap " trigger architecture, produce sparkover, discharge charged particle by trigger electrode to main electrode, and then initiation main gap punctures conducting.Activated with energy can maintain the burning triggering electric arc continuously, until the plasma that electric arc discharges causes puncturing of main electrode.Domesticly start late in the research of clearance type overvoltage protecting device, research level is not high, does not form characteristic overvoltage protecting device.
Utility model content
The purpose of this utility model is to provide a kind of low pressure edge flashing triggered gap type overvoltage protection, this device be operated in hypobaric, structure simple, there is stable operation voltage, adopt high-permitivity ceramics as triggering medium.
The utility model solves by the following technical programs:
A kind of low pressure edge flashing triggered gap type overvoltage protection, comprise main electrode and insulation crust, described main electrode comprises main electrode A and main electrode B, main electrode A and main electrode B is separately positioned on the two ends of insulation crust, closing on main electrode A or main electrode B is provided with trigger electrode, between the main electrode that trigger electrode and its close on, be provided with triggering medium, described main electrode, trigger electrode, triggering medium and insulation crust form confined space, are filled with medium in confined space; Resistor is connected with between described trigger electrode and the main electrode away from trigger electrode.
The medium of filling in described confined space selects gas medium, and gas medium selects air, nitrogen, carbon dioxide, or the gas medium of other type, and the pressure limit of the gas medium of confined space is 1-5000Pa.
Described resistor one end is connected with trigger electrode, and the other end is connected with the main electrode away from trigger electrode, and resistor is arranged on the outside of confined space.
Described triggering medium forms contact-making surface A with the main electrode of closing on trigger electrode, and trigger between medium and trigger electrode and form contact-making surface B, contact-making surface A and contact-making surface B is close contact face.
The syndeton of described resistor can select cascaded structure or parallel-connection structure.
Described trigger electrode and insulation crust can form one.
The material selection high-permitivity ceramics material of described triggering medium.
The utility model has following beneficial effect:
The utility model can be operated in hypobaric, and structure is simple, has stable operation voltage.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present utility model;
Fig. 2 is trigger architecture schematic diagram of the present utility model;
Fig. 3 is resistor in series structural principle front view of the present utility model;
Fig. 4 is capacitor in parallel structural principle vertical view of the present utility model.
Wherein, 1 is main electrode A; 2 is main electrode B; 3 is trigger electrode; 4 is resistor; 5 for triggering medium; 6 is shell of becoming attached to; 7 is confined space; 8 is contact-making surface A; 9 is contact-making surface B.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
See Fig. 1, be structure principle chart of the present utility model, the utility model comprises two main electrode A 1 and main electrode B 2, and the discharging gap formed in confined space 7 between main electrode A 1 and main electrode B2; A trigger electrode 3, trigger electrode 3 closes on main electrode B 2 and arranges, and resistor 4 is connected between main electrode A 1 and trigger electrode 3; Be provided with between main electrode 2 and trigger electrode 3 and trigger medium 5, trigger medium 5 and select high-permitivity ceramics material; 6 is insulation crust, main electrode A 1, main electrode B 2, trigger electrode 3, triggering medium 5, and insulation crust 6 forms confined space 7, the medium of confined space 7 selects gas medium, gas medium can be air, nitrogen, carbon dioxide, or the gas medium of other type, confined space 7 keeps gas pressure in 1-5000Pa scope.Resistor 4 is arranged on the outside of above-mentioned closed environment, and overvoltage is guided to trigger electrode 3 by resistor 4, produces edge flashing under the voltage effect between trigger electrode 3 and main electrode B 2, guides the discharging gap between main electrode A 1 and main electrode B 2 to puncture.Insulation crust 6 is divided into two parts by trigger electrode 3, and insulation crust 6 top ensures can not produce edge flashing between main electrode A 1 and trigger electrode 3; Insulation crust 6 bottom ensures can not produce edge flashing between main electrode B 2 and trigger electrode 3.
See Fig. 2, for trigger architecture schematic diagram of the present utility model, for the vertical view that main electrode B 2, trigger electrode 3, triggering medium 5 form, triggering medium 5 is arranged between main electrode B 2 and trigger electrode 3, trigger medium 5 and form contact-making surface A 8 with main electrode 2, trigger medium 5 and form contact-making surface B 9 with trigger electrode 3, contact-making surface A 8 and contact-making surface B 9 are close contact face.Trigger under the effect of medium 5 is to execute voltage effect outside and produce edge flashing, the width triggering medium 5 determines the size of edge flashing voltage to determine the puncture voltage guiding discharging gap to puncture simultaneously.By changing the width triggering medium 5, different overvoltage protection levels can be adapted to.
See Fig. 3 and Fig. 4, be respectively novel resistor 4 cascaded structure principle front view and parallel-connection structure principle vertical view, it can be diversified that the syndeton of resistor 4 is arranged, connect in series structure can increase the edge flashing voltage of resistor 4 body, and the body that parallel connection structure can increase resistor 4 bears power.The effect of resistor 4 is the overvoltage appeared on main electrode A 1 to guide to trigger electrode 3, occur between trigger electrode 3 and main electrode B 2 that voltage makes triggering medium 5 produce edge flashing, guide the discharging gap between main electrode A 1, main electrode B 2 to puncture.
Claims (7)
1. a low pressure edge flashing triggered gap type overvoltage protection, it is characterized in that, comprise main electrode and insulation crust (6), described main electrode comprises main electrode A (1) and main electrode B (2), main electrode A (1) and main electrode B (2) is separately positioned on the two ends of insulation crust (6), closing on main electrode A (1) or main electrode B (2) is provided with trigger electrode (3), be provided with between trigger electrode (3) and its main electrode of closing on and trigger medium (5), described main electrode, trigger electrode (3), trigger medium (5) and form confined space (7) with insulation crust (6), confined space is filled with medium in (7), resistor (4) is connected with between described trigger electrode (3) and the main electrode away from trigger electrode (3).
2. a kind of low pressure edge flashing triggered gap type overvoltage protection according to claim 1; it is characterized in that; the medium of filling in described confined space (7) selects gas medium; gas medium selects air, nitrogen, carbon dioxide, and the pressure limit of the gas medium of confined space (7) is 1-5000Pa.
3. a kind of low pressure edge flashing triggered gap type overvoltage protection according to claim 1 and 2; it is characterized in that; described resistor (4) one end is connected with trigger electrode (3); the other end is connected with the main electrode away from trigger electrode (3), and resistor (4) is arranged on the outside of confined space (7).
4. a kind of low pressure edge flashing triggered gap type overvoltage protection according to claim 1; it is characterized in that; described triggering medium (5) forms contact-making surface A (8) with the main electrode of closing on trigger electrode (3); trigger between medium (5) and trigger electrode (3) and form contact-making surface B (9), contact-making surface A (8) and contact-making surface B (9) are close contact face.
5. a kind of low pressure edge flashing triggered gap type overvoltage protection according to claim 1, it is characterized in that, the syndeton of described resistor (4) can select cascaded structure or parallel-connection structure.
6. a kind of low pressure edge flashing triggered gap type overvoltage protection according to claim 1, is characterized in that, described trigger electrode (3) and insulation crust (6) can form one.
7. a kind of low pressure edge flashing triggered gap type overvoltage protection according to claim 1, is characterized in that, the material selection high-permitivity ceramics material of described triggering medium (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520190505.9U CN204481325U (en) | 2015-03-31 | 2015-03-31 | A kind of low pressure edge flashing triggered gap type overvoltage protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520190505.9U CN204481325U (en) | 2015-03-31 | 2015-03-31 | A kind of low pressure edge flashing triggered gap type overvoltage protection |
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| Publication Number | Publication Date |
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| CN204481325U true CN204481325U (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520190505.9U Expired - Fee Related CN204481325U (en) | 2015-03-31 | 2015-03-31 | A kind of low pressure edge flashing triggered gap type overvoltage protection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038222A (en) * | 2018-07-30 | 2018-12-18 | 华格电子（昆山）有限公司 | There is the active overvoltage protection gap of plug function under vacuum environment |
| CN109038221A (en) * | 2018-07-30 | 2018-12-18 | 华格电子（昆山）有限公司 | There is the active overvoltage protection gap of plug function under gaseous environment |
| CN109690892A (en) * | 2016-08-17 | 2019-04-26 | 通用电气公司 | Gap with the excitation of triple point electron emission |
-
2015
- 2015-03-31 CN CN201520190505.9U patent/CN204481325U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109690892A (en) * | 2016-08-17 | 2019-04-26 | 通用电气公司 | Gap with the excitation of triple point electron emission |
| CN109690892B (en) * | 2016-08-17 | 2021-05-18 | 通用电气公司 | Spark gap with triple point electron emission excitation |
| CN109038222A (en) * | 2018-07-30 | 2018-12-18 | 华格电子（昆山）有限公司 | There is the active overvoltage protection gap of plug function under vacuum environment |
| CN109038221A (en) * | 2018-07-30 | 2018-12-18 | 华格电子（昆山）有限公司 | There is the active overvoltage protection gap of plug function under gaseous environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20180331 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |