CN1674392A - Overvoltage protecting device based on hollow electrode - Google Patents
Overvoltage protecting device based on hollow electrode Download PDFInfo
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- CN1674392A CN1674392A CN 200510041866 CN200510041866A CN1674392A CN 1674392 A CN1674392 A CN 1674392A CN 200510041866 CN200510041866 CN 200510041866 CN 200510041866 A CN200510041866 A CN 200510041866A CN 1674392 A CN1674392 A CN 1674392A
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Abstract
The present invention relates to an overvoltage protection device based on hollow electrodes. It includes upper hollow electrode and lower hollow electrode which are parallel and packaged in an insulated closed external shell by means of upper packaging end cover and lower packaging end cover, the interior of upper packaging end cover and lower packaging end cover, the interior of upper electrode or lower electrode is equipped with trigger electrode, and the spacing distance between end face of upper electrode and end face of lower electrode is 1-3 mm, and on the end face of upper electrode and on the end face of lower electrode one or more than one correspondent concentric through hole is cut respectively, and the diameter of said through hole is 2-5 mm, between upper electrode and lower electrode a shielding case is set.
Description
Technical field
The present invention relates to a kind of overvoltage protecting device, particularly a kind of overvoltage protecting device based on coreless armature.
Background technology
Along with the develop rapidly of information system, the research work that is used for the overvoltage protecting device of power-supply system has caused that people pay attention to greatly.Spark switch with various electrode shapes, existing a large amount of report.Wherein representational is the clearance type overvoltage protection device of German phoenix contact limited company, dotey Te Man difficult to understand limited company, DHEN company and French CITEL company.What the technology of Germany phoenix contact limited company related to is two angle type electrodes, constitutes the spark gap of one " V " font.When spark gap is lighted a fire, produce electric arc between two electrodes, its advantage is to bear bigger impulse current, shortcoming is that operation voltage is higher, and the operation voltage less stable.Its modified model is to have placed auxiliary ignition device between the corresponding end of electrode, can cause surface ignition.Its advantage is to have comparatively constant less operation voltage, but auxiliary ignition device when particularly being stained with electrode material on the surface, can form the short circuit between the electrode repeatedly losing efficacy easily under the arcing, causes the accident.What the technology of Germany dotey Te Man difficult to understand limited company related to is the sparkle-distributing electric discharge device with a plurality of series connection, and its ignition voltage is a n sparkle-distributing gap ignition voltage sum.For reducing its ignition voltage, modified model is that one of them sparkle-distributing gap is increased an auxiliary firing gap, is used for reducing its operation voltage.But its complex structure also need and connect equalizing capacitance in the sparkle-distributing gap, to form network, makes and adjust all comparatively difficulty.The clearance type overvoltage protecting device of Germany DHEN and French CITEL company all is that the gas discharge gap is encapsulated in the container of a withstand voltage inflation basically; because adopt the form of gas discharge, its pluses and minuses are similar with the technology that German phoenix contacts limited company.The domestic research work that is used for the overvoltage protecting device of power-supply system is started late, and particularly the overvoltage protecting device research level of big discharge capacity is lower.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art, a kind of overvoltage protecting device based on coreless armature is provided, this overvoltage protecting device has and bears great derivation transient pulse current capacity, minimum shake and long useful life.
For achieving the above object, the technical solution used in the present invention is: comprise the parallel top electrode and the bottom electrode that are arranged in the insulation sealing shell, be characterized in, top electrode and bottom electrode be surface finish become minute surface hollow structure and by last encapsulation end cap and down the encapsulation end cap be encapsulated in the insulation sealing shell, in top electrode or bottom electrode, be provided with trigger electrode, spacing between top electrode and the bottom electrode end face is 1～3mm, and on the end face of top electrode and bottom electrode, offer one or more corresponding concentric pylone respectively, the diameter of this through hole is 2～5mm, also is provided with radome between top electrode and bottom electrode.Another characteristics of the present invention are: trigger electrode comprises two conical electrode, the distance of the conical surface that two conical electrodes are relative is less than 1mm, the starting the arc part of a creeping discharge of clamping in the middle of conical electrode, two conical electrodes are introduced the outside of top electrode or bottom electrode respectively by two guide rods, and by insulating sleeve the following encapsulation end cap of going up encapsulation end cap or bottom electrode of two conical electrode and top electrode are isolated; Through hole evenly is opened on the end face of top electrode and bottom electrode; Be filled with helium, hydrogen or the inert gas that pressure is 20-100Pa in the insulation sealing shell.
Because the inside of the electrode of two parallel symmetries of the present invention is hollow; the electrode interior of hollow is convenient to the formation of effective electron; and be provided with a trigger electrode in the inside of hollow electrode; can under extremely low overvoltage, make this gap action, guarantee that promptly this overvoltage protection device has constant less operation voltage.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention;
Fig. 2 is the structural representation of trigger electrode 3 of the present invention.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are described in further detail.
Referring to Fig. 1, the present invention includes the parallel top electrode 1 and the bottom electrode 2 that are arranged in the insulation sealing shell of making by ceramic material 4, top electrode 1 becomes the hollow structure of minute surface with bottom electrode 2 for surface finish and is encapsulated in the insulation sealing shell 4 by last encapsulation end cap 15 and following encapsulation end cap 16, in top electrode 1 or bottom electrode 2, be provided with trigger electrode 3, spacing 7 between top electrode 1 and bottom electrode 2 end faces is 1～3mm, and on the end face of top electrode 1 and bottom electrode 2, offer one or more corresponding concentric pylone 6, the diameter of this through hole 6 is 2～5mm, between top electrode 2 and bottom electrode 3, also be provided with radome 5, the purpose of radome 5 is the inner surfaces that are splashed to insulation sealing shell 4 for the metallic vapour that prevents the pulsed arc generation, cause the short circuit between the electrode, and in insulation sealing shell 4, be filled with the helium that pressure is 20～100Pa, hydrogen or inert gas.
Referring to Fig. 2, trigger electrode 3 of the present invention comprises two conical electrodes 8 and 9, the distance of the conical surface that two conical electrodes 8 are relative with 9 is less than 1mm, the starting the arc part 10 of a creeping discharge of clamping in the middle of conical electrode 8 and 9, two conical electrodes 8 and 9 are respectively by two guide rods 11 and 12 outsides of introducing top electrodes 1 or bottom electrode 2, and by insulating sleeve 13 and 14 with two conical electrode 8 and 9 with the following encapsulation end cap of going up encapsulation end cap 15 or bottom electrode 2 16 isolation of top electrode 1.Trigger electrode 3 can be pottery, semiconductive ceramic, as metal oxides such as zinc oxide, carborundum, also can be to be made by other insulating material, but the ability of anti-electric arc must be arranged, and Shi Buhui produces materials such as carbon being heated.
The inside of two parallel symmetrical top electrodes 1 of the present invention and bottom electrode 2 is hollow, the formation of effective electron is convenient in electrode 1,2 inside of hollow, be arranged on the trigger electrode 3 in top electrode 1 or the bottom electrode 2, can under extremely low overvoltage, make this gap action, guarantee that this overvoltage protection device has constant less operation voltage; Offer more than one through hole 6 on the end face of the electrode 1,2 of two parallel symmetries, and through hole 6 must be split, to guarantee that charged particle enters the inside of another electrode by through hole 6, like this, the inside of an electrode has therein formed virtual anode, because the high concentration of this place's electric field has produced electron field emission in its electrode interior, i.e. the cold cathode of electronics emission; The quantity of the through hole of offering 6 more for a long time, the ability that it is through-flow is relatively large; Be filled with the gas of 20～100Pa in the insulation sealing shell of being made by ceramic material 4, the top electrode 1 of two parallel symmetries and the spacing of bottom electrode 27 are 1～3mm, and it is less than or equal to the mean free path of electronics; Top electrode 1 and bottom electrode 2 are selected the electric conducting material of anti-electric arc for use, have reduced because the evaporation of metal electrode material under the arcing; Radome 5 is installed around top electrode 1 and bottom electrode 2, influences the insulation property of overvoltage protecting device to prevent the electrode injection that pulsed arc causes.
Claims (4)
1; a kind of overvoltage protecting device based on coreless armature; comprise the parallel top electrode [1] and the bottom electrode [2] that are arranged in the insulation sealing shell [4]; it is characterized in that: top electrode [1] becomes the hollow structure of minute surface with bottom electrode [2] for surface finish and is encapsulated in the insulation sealing shell [4] by last encapsulation end cap [15] and following encapsulation end cap [16]; in top electrode [1] or bottom electrode [2], be provided with trigger electrode [3]; spacing [7] between top electrode [1] and bottom electrode [2] end face is 1～3mm; and on the end face of top electrode [1] and bottom electrode [2], offer one or more corresponding concentric pylone [6] respectively; the diameter of this through hole [6] is 2～5mm, also is provided with radome [5] between top electrode [2] and bottom electrode [3].
2; overvoltage protecting device based on coreless armature according to claim 1; it is characterized in that: said trigger electrode [3] comprises two conical electrodes [8] and [9]; the distance of the conical surface that two conical electrodes [8] are relative with [9] is less than 1mm; the starting the arc part [10] of a creeping discharge of clamping in the middle of conical electrode [8] and [9]; two conical electrodes [8] and [9] are passed through the outside that top electrode [1] or bottom electrode [2] are introduced in two guide rods [11] and [12] respectively, and by insulating sleeve [13] and [14] two conical electrode [8] and [9] are isolated with the following encapsulation end cap [16] that going up of top electrode [1] encapsulates end cap [15] or bottom electrode [2].
3, the overvoltage protecting device based on coreless armature according to claim 1 is characterized in that: said through hole [6] evenly is opened on the end face of top electrode [1] and bottom electrode [2].
4, the overvoltage protecting device based on coreless armature according to claim 1 is characterized in that: be filled with helium, hydrogen or inert gas that pressure is 20-100Pa in the said insulation sealing shell [4].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100418668A CN100370670C (en) | 2005-03-28 | 2005-03-28 | Overvoltage protecting device based on hollow electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100418668A CN100370670C (en) | 2005-03-28 | 2005-03-28 | Overvoltage protecting device based on hollow electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1674392A true CN1674392A (en) | 2005-09-28 |
| CN100370670C CN100370670C (en) | 2008-02-20 |
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ID=35046730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100418668A Expired - Fee Related CN100370670C (en) | 2005-03-28 | 2005-03-28 | Overvoltage protecting device based on hollow electrode |
Country Status (1)
| Country | Link |
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| CN (1) | CN100370670C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738785A (en) * | 2011-04-15 | 2012-10-17 | 上海电科电器科技有限公司 | Discharge module of overvoltage protector |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3207663A1 (en) * | 1982-03-03 | 1983-09-08 | Siemens AG, 1000 Berlin und 8000 München | SURGE PROTECTOR WITH A GAS-FILLED HOUSING |
| US4628399A (en) * | 1985-03-27 | 1986-12-09 | Kabushiki Kaisha Sankosha | Anti-overvoltage protector |
| WO2003021735A1 (en) * | 2001-09-02 | 2003-03-13 | Phoenix Contact Gmbh & Co. Kg | Overload protection device |
| DE50300047D1 (en) * | 2002-04-11 | 2004-09-16 | Bettermann Obo Gmbh & Co Kg | radio link |
-
2005
- 2005-03-28 CN CNB2005100418668A patent/CN100370670C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738785A (en) * | 2011-04-15 | 2012-10-17 | 上海电科电器科技有限公司 | Discharge module of overvoltage protector |
| CN102738785B (en) * | 2011-04-15 | 2015-07-22 | 上海电科电器科技有限公司 | Discharge module of overvoltage protector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100370670C (en) | 2008-02-20 |
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| PB01 | Publication | ||
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Granted publication date: 20080220 Termination date: 20130328 |