CN101764358A - Improved multi-gap metal ceramic gas discharge tube with external trigger terminal - Google Patents
Improved multi-gap metal ceramic gas discharge tube with external trigger terminal Download PDFInfo
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- CN101764358A CN101764358A CN200910107557A CN200910107557A CN101764358A CN 101764358 A CN101764358 A CN 101764358A CN 200910107557 A CN200910107557 A CN 200910107557A CN 200910107557 A CN200910107557 A CN 200910107557A CN 101764358 A CN101764358 A CN 101764358A
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Abstract
The invention discloses an improved multi-gap metal ceramic gas discharge tube with an external trigger terminal, belonging to the technical field of gas discharge. The tube comprises terminal electrodes, middle electrodes, inner electrodes, ceramic ring sheets and ceramic insulating parts which are formed by overlaying at least two sections of metallized ceramic tubes. One middle electrode is arranged between every two sections of the metallized ceramic tubes, and the middle electrodes are connected with the metallized ceramic tubes in a sealing way. The metallized ceramic tubes are cylindrical; the middle of the inner walls of the ceramic tubes are formed into ring-shaped flanges in a integrating way; the cross sections of the ceramic tubes are quadrate or trapezoidal; the upper end faces and the lower end faces of the flanges respectively support one inner electrodes; each inner electrode is isolated from the terminal electrodes or the middle electrodes through the ceramic ring sheets to form into discharge gaps. By adopting the flanges with the quadrate or trapezoidal cross sections and the ceramic ring sheets, the electrodes are isolated from each other, so that the tube has the advantages of multi gaps, small volume, simple structure, and convenient and quick assembly, etc.
Description
Technical field
The present invention relates to the gas discharge technical field, refer in particular to a kind of in the forceful electric power power-supply system after the Lightning Over-voltage, the ceramet gas discharge tube that can put out certainly.
Background technology
The cermet discharge tube is as a switch element that depends on voltage, rely on its superpower electric energy power of crossing, responding ability and minimum interelectrode capacitance fast, be widely used in protection thunderbolt and electromagnetic pulse bring in the electronic equipment signal system overvoltage damage that electronic equipment caused.
Because all there is a common defective in widely used single gap ceramet gas discharge tube before: in the lightning protection of forceful electric power power-supply system, single gap ceramet gas discharge tube Lightning Over-voltage is later because power-supply system can provide its voltage of keeping discharge and electric current, cause after the overvoltage, the phenomenon that discharge tube can not cut out voluntarily occurs.
China national Department of Intellectual Property disclosed the application for a patent for invention of " with the multi-clearance ceramet gas discharge tube of external trigger terminal " by name in 2009 03 month 04, application number is 200710030857.8, and its technical scheme that adopts is: comprise that ceramic locating pin, metallized ceramic insulating part, discharging gap electrode isolation plate, discharging gap transition connect division board, threaded rod electrode and terminal etc.Have at least two-layer endless metal ceramic insulator two ends to be connected with threaded rod electrode, the airtight many clearance spaces that inert gas is arranged that form, the endless metal ceramic insulator is one-body molded annular flange flange, described annular flange flange is two electrode isolation plates that discharging gap is arranged of both ends of the surface supporting up and down, discharging gap electrode isolation plate offers ceramic locating pin hole, through hole is extended in discharge, the pottery locating pin is equipped with ceramic locating pin in the hole, be provided with the discharging gap transition between two metallized ceramic insulating parts and connect division board, discharge is extended through hole and is formed the related path of gas, and the discharging gap transition connects one-body moldedly on the division board has a terminal.Like this, metallized ceramic insulating part, discharging gap electrode isolation plate, discharging gap transition connection division board and threaded rod electrode have just constituted discharging gap.In addition, terminal is located between two metallized ceramic insulating parts, and an end leads to outside the metallized ceramic insulating part, and is connected with external circuit.The high arc light pressure drop of this technical scheme by multi-clearance ceramet gas discharge tube solved the single gap ceramet gas discharge tube and has been applied in the electronic equipment power source system, the overvoltage that exists is the problem that can not close voluntarily in AC and DC forceful electric power origin system of single gap ceramet gas discharge tube later, has reached the preferable effect of lightning protection.
Also exist some structural weak points in the technique scheme.At first, set flange is provided with two steps on the described metallized ceramic insulating part, and its cross section is convex shape, need manually set right after described discharging gap electrode isolation plate is put into, and makes in its annular omission that snaps in described flange, takes a lot of work and requires great effort.Moreover, it offers ceramic locating pin hole on the discharging gap division board, pottery is equipped with ceramic locating pin in the locating pin hole, is used to constitute between discharging gap division board and the threaded rod electrode, the discharging gap division board is connected the discharging gap between the division board with the discharging gap transition.Therefore, it the time need expend a large amount of time in assembling and ceramic locating pin be packed in the ceramic locating pin hole, through rough calculation, in the existing product, for the gas discharge tube that includes four endless metal ceramic insulators (being commonly referred to the Pyatyi ceramet gas discharge tube), it has three discharging gap transition to connect division board, nearly 48 ceramic locating pins, all ceramic locating pins will be installed in the ceramic locating pin hole on the discharging gap division board, its workload is considerable, expend a large amount of time and efforts, time-consuming also effort, production efficiency is low, and labor strength is big, directly causes production cost high.Therefore, need product a kind of both simple in structure, easy to assembly, with low cost again badly, to satisfy market demand.
Summary of the invention
The present invention is intended at the described deficiency that exists in the above-mentioned prior art, and a kind of a plurality of discharging gaps, structure but also simple ceramet gas discharge tube of not only can having guaranteed is provided.
For achieving the above object, the present invention by the following technical solutions.
Improved multi-clearance ceramet gas discharge tube with external trigger terminal, comprise termination electrode, target, interior electrode, ceramic ring plate and the ceramic insulator that is laminated by at least two joint metallized ceramic tubes, two termination electrodes are arranged on the two ends of ceramic insulator, and the three defines an airtight air chamber.Per two joints are provided with a target between the metallized ceramic tubes, and between target and the metallized ceramic tubes also for being tightly connected, the gas between every joint metallized ceramic tubes is associated by discharge extension through hole set on the target.
Described metallized ceramic tubes is a cylindrical shape, its inwall middle part is one-body molded have an annular, cross section is square or trapezoidal flange, described flange upper and lower end face respectively is supported with an interior electrode, isolate by ceramic ring plate between electrode and termination electrode or the target in each, described ceramic ring plate such as plain cushion round, its external diameter is slightly littler than described metallized ceramic tubes internal diameter, and is bigger than the internal diameter of described flange.
Between termination electrode of the present invention and the interior electrode, all constitute a discharging gap between interior electrode and the interior electrode and between interior electrode and the target, each discharging gap is a layer of inert.
Be provided with a plurality of discharges in the middle of the described target and extend through holes, integral body is round sheet, and its diameter equates with the metallized ceramic tubes external diameter, and its edge is one-body molded that a trigger terminal arranged, and described trigger terminal leads to outside the described ceramic insulator.Electrode is the circular metal plate of uniform thickness in described, can be provided with a plurality of discharges on it and extend through hole, also can not establish.
Joint in target and metallized ceramic tubes, and termination electrode and described ceramic insulator joint all accompany the silver-copper brazing alloy of a slice annular, described silver-copper brazing alloy fusing, described target and metallized ceramic tubes firm engagement can be made that the air chamber that is defined is the airtight space that inert gas is arranged after the cooled and solidified.
In sum, the present invention compared with prior art, its beneficial effect is: one, ceramic ring plate is replaced described ceramic locating pin of the prior art, during installation, as long as ceramic ring plate is put into metallized ceramic tubes, and electrode only needs a ceramic ring plate in each.And in the prior art, each discharging gap division board (being equal to described interior electrode of the present invention) is provided with a plurality of ceramic locating pins hole, then want careful ground that described ceramic locating pin is installed in the ceramic locating pin hole during installation, quite time-consuming taking great energy, labour intensity is big, production efficiency is low, thereby causes cost can not to be in any more.
Two, in the existing product, the set flange of described metallized ceramic tubes inwall is that two-stage is step-like, its cross section is convex shape, discharging gap division board (being equal to described interior electrode of the present invention) often all will manually set right after putting into metallized ceramic tubes, make in its annular omission that is in flange, just can reach locating effect.Distinguishing characteristics of the present invention is, is designed to the cross sectional shape of flange square or trapezoidal.Because its diameter is more smaller than described metallized ceramic tubes internal diameter, and is bigger again than the internal diameter of flange, therefore, after ceramic ring plate is put into metallized ceramic tubes, can realize automatic location.Like this, when producing assembling, required time is also shorter, has also improved production efficiency from another point of view.And, saved the operation part of manually setting right, help realizing the production procedure automation.
Therefore, the present invention compares with prior art, and it can reach very significantly beneficial effect reducing labor intensity, simplify product structure, optimize production procedure, obvious improvement having been arranged aspect enhancing productivity and reducing cost.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of flange of the present invention;
Fig. 3 is a prior art flange structural representation;
Fig. 4 is a stereogram of the present invention;
Fig. 5 is the embodiment of the invention one;
Fig. 6 is the embodiment of the invention two.
Among the figure: the 1-termination electrode; 2,2 '-metallized ceramic tubes; Electrode in the 3-; 4-pottery ring plate; The 5-target; The 6-ceramic insulator; The 7-scolder; 20,20 '-flange; Through hole is extended in the 50-discharge; The 51-trigger terminal.
Embodiment
Further set forth technical scheme of the present invention below in conjunction with description of drawings and embodiment thereof.
Embodiment one: please refer to shown in Figure 4, the ceramic insulator 6 that the present invention includes termination electrode 1, interior electrode 3, target 5 and be laminated by at least two joint metallized ceramic tubes 2.Metallized ceramic tubes 2 is cylindrical, the inwall middle part be provided with an annular, cross section is square flange 20 (as shown in Figure 2), this flange about in the of 20 both ends of the surface respectively support an interior electrode 3, described in electrode 3 be the uniform circular metal plate of thickness, and two smooth surfaces are smooth up and down.
Between per two joint metallized ceramic tubes 2, all be installed on a target 5, described target 5 integral body are round sheet, its diameter equates with metallized ceramic tubes 2 external diameters, and its edge is one-body molded that a trigger terminal 51 arranged, and described trigger terminal 51 leads to outside the described ceramic insulator 6.
Between each target 5 and interior electrode 3, be equipped with a ceramic ring plate 4, to form a discharging gap.Described ceramic ring plate 4 is as the plain cushion round, and its external diameter is slightly littler than the internal diameter of described metallized ceramic tubes 2, but bigger than the internal diameter of described flange 20.
As shown in Figure 5, in order to describe implementation process of the present invention more intuitively, tentative its above-below direction is the axis direction of metallized ceramic tubes 2.At first, two interior electrodes 3 are put into a described metallized ceramic tubes 2, make it withstand the both ends of the surface up and down of described flange 20 respectively, respectively put into a ceramic ring plate 4 again from the two ends up and down of metallized ceramic tubes 2, make it be close to interior electrode 3, so just constitute a discharge cell, each discharge cell has three discharging gaps.The present invention is made up of two or more described discharge cells, be provided with a target 5 between each discharge cell, the trigger terminal 51 of all targets 5 is all towards a direction setting, at last two termination electrodes 1 are installed in the two ends up and down of described ceramic insulator 6, the three forms a confined space, and inside is full of inert gas.
In the joint place of each target 5 with metallized ceramic tubes 2, and the joint place of termination electrode 1 and metallized ceramic tubes 2, all folded up a laminar scolder 7, described scolder 7 is a silver-copper brazing alloy, fusing point is lower, target 5 can be connected with metallized ceramic tubes 2 air-tightness after solidifying, scolder 7 integral body are annular, and the cross section of big or small and described metallized ceramic tubes 2 is consistent.By behind the above-mentioned steps mount, put into the high temperature furnace heating, make described scolder 7 fusings, just can obtain product through cooling again.
Embodiment two: the difference of present embodiment and embodiment one is: as shown in Figure 6, the centre of the centre of electrode 3 and target 5 is respectively equipped with one or more discharges extension through holes 30 and discharge extension through hole 50 in described, each discharging gap extends through hole 30 by this discharge and discharge extension through hole 50 is associated, and the discharge tube ON time is shortened.Other implementation steps of present embodiment and method are identical with embodiment one, do not repeat them here.
When the present invention was applied to lightning-protection module, one of them termination electrode 1 was connected with live wire (phase line), and another termination electrode 1 and zero line (or protection ground) are connected, and each trigger terminal 51 is connected respectively and inserted zero line (or protection ground) after the piezo-resistance.When described lightning-protection module was not worked, the present invention was equivalent to several series capacitors, and capacitance is about 20pF, and described each piezo-resistance also is equivalent to an electric capacity, and it is about 2200pF.When being struck by lightning, voltage more than 90% is applied to first discharge cell (promptly with immediate that discharge cell of live wire), when invading first discharge cell, passes through pulse surge piezo-resistance conducting in advance, short time voltage after the conducting between live wire and zero line is interior by the piezo-resistance clamper, because being provided with discharge, the present invention extends through hole, voltage on the piezo-resistance will start second, the the 3rd even the 4th (if the 4th discharge cell is arranged) discharge cell conducting, second, after the third and fourth discharge cell conducting, because gap discharge pressure drop therebetween is lower than the voltage on the piezo-resistance, second, piezo-resistance quits work after the 3rd even the 4th discharge cell conducting, pulse surge is later because the crest voltage of power supply is lower than the voltage of keeping interpolar arc discharge of the present invention, the present invention quits work and blow-out, reached the purpose that Lightning Over-voltage is released, circuit returns to not on-state.
The above only is two preferred embodiments of the present invention; be not to its do limited exhaustive, should be understood that, that it can also have a lot of execution modes; so every equivalence of being done under the technology of the present invention essence changes or modifies, and all should be considered as within its protection range.
Claims (6)
1. improved multi-clearance ceramet gas discharge tube with external trigger terminal, comprise termination electrode (1), interior electrode (3), target (5) and the ceramic insulator (6) that is laminated by at least two joint metallized ceramic tubes (2), described metallized ceramic tubes (2) is a cylindrical shape, its inwall middle part is one-body molded an annular flange flange (20), and the upper and lower end face of described flange (20) respectively is supported with an interior electrode (3); Between per two metallized ceramic tubes (2), be installed on a target (5), end and bottom at described ceramic insulator (6) respectively are provided with a termination electrode (1), described termination electrode (1) forms airtight air chamber with ceramic insulator (6), all form a discharging gap between each electrode, it is characterized in that: also comprise ceramic ring plate (4), described ceramic ring plate (4) is separated termination electrode (1) or target (5) with interior electrode (3).
2. gas discharge tube according to claim 1, it is characterized in that: described target (5) is whole to be round sheet, its diameter equates with metallized ceramic tubes (2) external diameter, and its edge is one-body molded a trigger terminal (51), and described trigger terminal (51) leads to outside the described ceramic insulator (6); Also can be provided with a plurality of discharges in the middle of it and extend through hole (50).
3. gas discharge tube according to claim 1 is characterized in that: electrode (3) is a circular metal plate in described, can be provided with a plurality of through holes on it.
4. gas discharge tube according to claim 1 is characterized in that: the cross section of described flange (20) is square or trapezoidal.
5. gas discharge tube according to claim 1 is characterized in that: described ceramic ring plate (4) is as the plain cushion round, and its external diameter is slightly littler than described metallized ceramic tubes (2) internal diameter, and is bigger than the internal diameter of described flange (20).
6. gas discharge tube according to claim 1, it is characterized in that: at the joint of target (5) with metallized ceramic tubes (2), and termination electrode and described ceramic insulator (6) joint all accompany the scolder (7) of a slice annular, can be with described target (5) and metallized ceramic tubes (2) good bond after described scolder (7) fusing is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910107557A CN101764358A (en) | 2009-06-02 | 2009-06-02 | Improved multi-gap metal ceramic gas discharge tube with external trigger terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910107557A CN101764358A (en) | 2009-06-02 | 2009-06-02 | Improved multi-gap metal ceramic gas discharge tube with external trigger terminal |
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| CN101764358A true CN101764358A (en) | 2010-06-30 |
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| CN200910107557A Pending CN101764358A (en) | 2009-06-02 | 2009-06-02 | Improved multi-gap metal ceramic gas discharge tube with external trigger terminal |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950926A (en) * | 2010-07-22 | 2011-01-19 | 西北核技术研究所 | High-voltage multi-gap series gas spark switch |
| CN102957097A (en) * | 2011-08-19 | 2013-03-06 | 朱淑华 | Twin-ion ESE (early streamer emission) lightning protection system |
| CN102969654A (en) * | 2012-12-18 | 2013-03-13 | 深圳市莱普斯科技有限公司 | Air discharge gap with arc chute |
| CN103021769A (en) * | 2011-09-24 | 2013-04-03 | 爱普科斯电子(孝感)有限公司 | Multi-step porcelain tube and gas discharge tube prepared thereby |
| CN107170540A (en) * | 2017-05-15 | 2017-09-15 | 隆科电子(惠阳)有限公司 | A kind of strong FDMOV components of long weatherability of service life |
| CN111293587A (en) * | 2018-12-10 | 2020-06-16 | 菲尼克斯电气公司 | Spark gap device for multiple spark gaps in a stacked device |
| CN111326954A (en) * | 2020-03-03 | 2020-06-23 | 山东睿控电气有限公司 | Follow current-free ceramic discharge tube with tripping function and surge protector |
| CN113872173A (en) * | 2021-07-22 | 2021-12-31 | 西安交通大学 | Intelligent multilayer gap overvoltage protector with high weldability based on copper-chromium alloy material |
-
2009
- 2009-06-02 CN CN200910107557A patent/CN101764358A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950926A (en) * | 2010-07-22 | 2011-01-19 | 西北核技术研究所 | High-voltage multi-gap series gas spark switch |
| CN102957097A (en) * | 2011-08-19 | 2013-03-06 | 朱淑华 | Twin-ion ESE (early streamer emission) lightning protection system |
| CN103021769A (en) * | 2011-09-24 | 2013-04-03 | 爱普科斯电子(孝感)有限公司 | Multi-step porcelain tube and gas discharge tube prepared thereby |
| CN102969654A (en) * | 2012-12-18 | 2013-03-13 | 深圳市莱普斯科技有限公司 | Air discharge gap with arc chute |
| CN107170540A (en) * | 2017-05-15 | 2017-09-15 | 隆科电子(惠阳)有限公司 | A kind of strong FDMOV components of long weatherability of service life |
| CN111293587A (en) * | 2018-12-10 | 2020-06-16 | 菲尼克斯电气公司 | Spark gap device for multiple spark gaps in a stacked device |
| CN111326954A (en) * | 2020-03-03 | 2020-06-23 | 山东睿控电气有限公司 | Follow current-free ceramic discharge tube with tripping function and surge protector |
| CN113872173A (en) * | 2021-07-22 | 2021-12-31 | 西安交通大学 | Intelligent multilayer gap overvoltage protector with high weldability based on copper-chromium alloy material |
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Open date: 20100630 |