CN100463326C - Concave, convex shaped or biconcave groove electrode overvoltage protection device under vacuum environment - Google Patents
Concave, convex shaped or biconcave groove electrode overvoltage protection device under vacuum environment Download PDFInfo
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- CN100463326C CN100463326C CNB2005100430867A CN200510043086A CN100463326C CN 100463326 C CN100463326 C CN 100463326C CN B2005100430867 A CNB2005100430867 A CN B2005100430867A CN 200510043086 A CN200510043086 A CN 200510043086A CN 100463326 C CN100463326 C CN 100463326C
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Abstract
Disclosed an electrode over-voltage protective unit in the shape of depressed, convex or double-groove in the condition of vacuum, comprises two parallel electrodes contained in insulation sealed housing, while the end-faces of said electrodes has symmetrically amounted bosses, groove, or double-groove, and the pressure outside the insulation sealed housing ranges from 10-3~10-4 pa. Since the electric field on the surface of electrodes of symmetrical boss, groove or the double-groove is concentrated, the effect to the condition of electrode surface is decreased while the consistency of discharging voltage is increased; the electrode with groove can avoid the short circuit between electrodes and shorten the distance between electrodes most, to attain the higher over-voltage protective lever, better consistency of operating voltage and the significantly improved function of delivering transient pulse current, while it has excellent inhibition to the subsequent current produced by industrial frequency.
Description
Technical field
The present invention relates to a kind of overvoltage protection, particularly a kind of vacuum environment is recessed, convex or dual-cavity electrode overvoltage protection device.
Background technology
In recent years, along with the develop rapidly of information-based industry, in the system because the harm that atmospheric over-voltage and switching overvoltage cause has caused people's very big attention.As the spark switch of the various electrode shapes of overvoltage protection element and device, existing a large amount of report.Wherein representational is that German phoenix contacts the clearance type overvoltage protecting device of limited company and the high-energy discharge pipe of French CITEL is the surge protector of core.The characteristics that the technology of Germany phoenix contact limited company relates to have two electrodes for this overvoltage protection; form the spark gap of " V " font; when light a fire in the gap; produce electric arc between two electrodes; under the effect of electromagnetic force and heat, electric arc moves forward along " V " font spark gap, and its advantage is to bear bigger impulse current; shortcoming is that operation voltage is higher, and the operation voltage less stable.Its improved mode is to have placed auxiliary ignition device between the corresponding end of electrode, can cause surface ignition.Its advantage is that this auxiliary air flashover spark gap is compared with the air gap that only depends on air breakdown, has comparatively constant, especially little operation voltage.Because this clearance type overvoltage protecting device only is made of a pair of spark gap, through-flow ability still is subjected to certain restriction.The high-energy discharge pipe of France CITEL be the involved characteristics of technology of the surge protector of core be with two electrode package in earthenware; in this earthenware, charge into rare gas; generally with two or three in parallel uses of gas discharge tube; its shortcoming is because the gas discharge tube of several parallel connections generally can not move when transient overvoltage simultaneously; therefore this overvoltage protecting device through-current capability can not be very big, unless the volume of this gas discharge tube is done very greatly.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; provide that a kind of vacuum environment is recessed, convex or dual-cavity electrode overvoltage protection device; this device has very good operation voltage consistency, lower voltage protection level and derives the ability of transient pulse electric current greatly; long useful life, and the subsequent current that power frequency supply produced had very good inhibitory action.
For achieving the above object, the technical solution used in the present invention is: first electrode and second electrode that comprise the insulation sealing shell and be enclosed in the positioned opposite in the insulation sealing shell, the first electrode diversion rod that said first electrode is made by oxygen-free copper and form by first electrode contact that the alloy conductive material is made, wherein the end face center of first electrode contact offers groove, the second electrode diversion rod that said second electrode is made by oxygen-free copper and form by second electrode contact that the alloy conductive material is made, wherein the end face center of second electrode contact offers boss or groove, and the pressure in the insulation sealing shell is 10
-3～10
-4Pa; Boss and groove are respectively cylindric, and the external diameter of boss [6] is 2.5～18mm, highly are 0.25～1mm, and the internal diameter of groove is 3.2～19mm, and the degree of depth is 1.5～2.5mm.
Another characteristics of the present invention are: first electrode and second electrode are cylindrical-shaped structure, its diameter is 8～20mm, first electrode and second electrode weld together by left end cover, right end cover and insulation sealing shell respectively, first electrode and second gaps between electrodes are 0.25mm～1.3mm, and first electrode and second electrode between the gap around also be provided with radome.
Because the electrode that the present invention has boss and groove or a dual-cavity is sealed in the insulation crust under the vacuum environment, when overvoltage takes place when, because the convex or the concavity place electric field high concentration of electrode surface, cause the transformation of field emission easily to electric arc, reduce the influencing factor of electrode surface state, improved the consistency of discharge voltage.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the structural representation of the embodiment of the invention 2.
Embodiment
Below in conjunction with drawings and Examples structural principle of the present invention and operation principle are described in further detail.
The present invention constitutes by being encapsulated in the band boss under the vacuum environment or the electrode 1,2 of groove 6 and groove 7; have very good operation voltage consistency, lower voltage protection level and derive the ability of transient pulse electric current greatly; long useful life, and the subsequent current that power frequency supply produced had very good inhibitory action.Band boss or groove 6 and groove 7 electrodes 1,2 constitute a pair of discharging gap 3, and electrode the 1, the 2nd is operated under the vacuum environment, carries out the transition to arc discharge by field emission when gap 3 punctures; Can the insulation sealing shell 4 of air and encapsulated electrode not impacted, has the ability of the electric current that withstands shocks greatly, thus the physical dimension of this overvoltage protection element can design less; The electrode surface of band boss or groove causes the transformation of field emission to arc discharge easily because electric field is comparatively concentrated, and therefore, this overvoltage has the consistency of good overvoltage protection level; Because parallel, the axially symmetric structure of electrode 1,2 are not easy to cause the transfer and the interelectrode short circuit of material between electrode, interelectrode like this distance just can change in a bigger scope, and operation voltage can be done lessly, promptly protects level higher.Be provided with radome 5 around the electrode 1,2, radome is used for preventing that metallic vapour from condensing on the inwall of insulation sealing shell 4, thereby causes the short circuit of electrode, and this radome 5 can be made with metal material, as metal materials such as oxygen-free coppers.
Claims (2)
1. a vacuum environment is recessed; convex or dual-cavity electrode overvoltage protection device; comprise insulation sealing shell [4] and first electrode [1] and second electrode [2] that are enclosed in the positioned opposite in the insulation sealing shell [4]; it is characterized in that: the first electrode diversion rod [8] that said first electrode [1] is made by oxygen-free copper and form by first electrode contact [10] that the alloy conductive material is made; wherein the end face center of first electrode contact [10] offers groove [7]; the second electrode diversion rod [9] that said second electrode [2] is made by oxygen-free copper and form by second electrode contact [11] that the alloy conductive material is made; wherein the end face center of second electrode contact [11] offers boss or groove [6], and the pressure in the insulation sealing shell [4] is 10
-3～10
-4Pa; Boss [6] and groove [7] are respectively cylindric, and the external diameter of boss [6] is 2.5～18mm, highly are 0.25～1mm, and the internal diameter of groove [7] is 3.2～19mm, and the degree of depth is 1.5～2.5mm.
2. vacuum environment according to claim 1 is recessed, convex or dual-cavity electrode overvoltage protection device; it is characterized in that: said first electrode [1] and second electrode [2] are cylindrical-shaped structure; its diameter is 8～20mm; first electrode [1] and second electrode [2] weld together by left end cover [12], right end cover [13] and insulation sealing shell [4] respectively; gap [3] between first electrode [1] and second electrode [2] is 0.25mm～1.3mm, and first electrode [1] and second electrode [2] between gap [3] also be provided with radome [5] on every side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100430867A CN100463326C (en) | 2005-08-11 | 2005-08-11 | Concave, convex shaped or biconcave groove electrode overvoltage protection device under vacuum environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100430867A CN100463326C (en) | 2005-08-11 | 2005-08-11 | Concave, convex shaped or biconcave groove electrode overvoltage protection device under vacuum environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1738134A CN1738134A (en) | 2006-02-22 |
| CN100463326C true CN100463326C (en) | 2009-02-18 |
Family
ID=36080833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100430867A Expired - Fee Related CN100463326C (en) | 2005-08-11 | 2005-08-11 | Concave, convex shaped or biconcave groove electrode overvoltage protection device under vacuum environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100463326C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100463315C (en) * | 2006-10-20 | 2009-02-18 | 西安交通大学 | Over voltage protector with planar flashover under vacuum environment |
| CN102157850B (en) * | 2010-12-30 | 2012-12-26 | 上海航天科工电器研究院有限公司 | Switch socket of heavy-current circuit breaker |
| DE102011014582A1 (en) * | 2011-03-21 | 2012-09-27 | Epcos Ag | Surge arrester with low response voltage and method for its preparation |
| CN110911214B (en) * | 2018-09-14 | 2021-12-10 | 平高集团有限公司 | Isolating switch capable of inhibiting VFTO and moving contact thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1014663B (en) * | 1988-11-24 | 1991-11-06 | 三菱电机株式会社 | Vacuum switch device |
| CN2152327Y (en) * | 1993-04-30 | 1994-01-05 | 周谕修 | Over-voltage protector |
| JPH10233145A (en) * | 1997-02-17 | 1998-09-02 | Toshiba Corp | Vacuum valve |
| US6437275B1 (en) * | 1998-11-10 | 2002-08-20 | Hitachi, Ltd. | Vacuum circuit-breaker, vacuum bulb for use therein, and electrodes thereof |
| CN1206685C (en) * | 2000-10-16 | 2005-06-15 | Lg产电株式会社 | Vacuum breaker used for vacuum switch |
-
2005
- 2005-08-11 CN CNB2005100430867A patent/CN100463326C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1014663B (en) * | 1988-11-24 | 1991-11-06 | 三菱电机株式会社 | Vacuum switch device |
| CN2152327Y (en) * | 1993-04-30 | 1994-01-05 | 周谕修 | Over-voltage protector |
| JPH10233145A (en) * | 1997-02-17 | 1998-09-02 | Toshiba Corp | Vacuum valve |
| US6437275B1 (en) * | 1998-11-10 | 2002-08-20 | Hitachi, Ltd. | Vacuum circuit-breaker, vacuum bulb for use therein, and electrodes thereof |
| CN1206685C (en) * | 2000-10-16 | 2005-06-15 | Lg产电株式会社 | Vacuum breaker used for vacuum switch |
Non-Patent Citations (2)
| Title |
|---|
| 装用真空断路器应注意的几个问题. 魏本纪.高压电器，第6期. 1996 |
| 装用真空断路器应注意的几个问题. 魏本纪.高压电器，第6期. 1996 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1738134A (en) | 2006-02-22 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090218 Termination date: 20120811 |