CN104377551A - Gas discharge tube with trigger electrodes - Google Patents
Gas discharge tube with trigger electrodes Download PDFInfo
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- CN104377551A CN104377551A CN201410668678.7A CN201410668678A CN104377551A CN 104377551 A CN104377551 A CN 104377551A CN 201410668678 A CN201410668678 A CN 201410668678A CN 104377551 A CN104377551 A CN 104377551A
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- discharge tube
- trigger electrode
- gas discharge
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- electrodes
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Abstract
The invention discloses a gas discharge tube with trigger electrodes. The gas discharge tube comprises two main discharge electrodes, the n trigger electrodes and n+1 ceramic tubes, wherein n is larger than or equal to one, the two main discharge electrodes are arranged at the two ends of the gas discharge tube, the n trigger electrodes are sequentially arranged between the two main discharge electrodes, every two adjacent electrodes are connected through the corresponding ceramic tube, and the ceramic tubes are filled with inert gas. By means of the gas discharge tube, the problems of the long response delay and the large follow current of an existing gas discharge tube are solved, and the lightning protection effect is improved.
Description
Technical field
The invention belongs to anti-thunder technical field, particularly a kind of gas discharge tube with trigger electrode.
Background technology
Gas discharge tube is a kind of lightning protection element of clearance-type, is applied widely in the lightning protection of communication system.Gas discharge tube works release Lightning Transient overcurrent and over-voltage.Due to discharge tube electrode between insulation resistance large, under distributed capacitance, to high frequency and the lightning protected of microwave signal, there is obvious advantage.The operation principle of discharge tube is gas discharge, when applying certain voltage when between electrode, just non-uniform electric field is produced at interpolar, the gas of interpolar starts to dissociate under the effect of electric field, when applied voltage increase to make interpolar field intensity exceed the dielectric strength of gas time, pole clearance is by discharge breakdown, conducting state is converted into by original state of insulation, after conducting, the voltage of interpolar maintains the voltage at electrical discharge arc two ends, also referred to as residual voltage, the size of residual voltage and the length of electric arc have relation, and the longer residual voltage of electric arc is higher.Otherwise electric arc is shorter, residual voltage is lower.
According to the regulation of Code for design of lightning protection of buildings GB50057-2010, install the surge protector of I grade of test at the consumer unit place that power supply is introduced, the internal core device of the surge protector of I grade of test usually adopts gas discharge tube.The weak point of gas discharge tube in power-supply system protection is that its interspike intervals is larger.Action sensitivity is not ideal enough, and the DC disruptive voltage value of the gas discharge tube that its main cause uses in the power supply system is higher, is generally about 1000V, and this is for the larger lightning wave of wave head rising steepness, and it is difficult to effectively suppress.When after gas discharge tube action, its residual voltage is less, makes gas discharge tube occur afterflow phenomenon, causes the faults such as electric power system short circuit.
Summary of the invention
In order to solve the technical problem that above-mentioned background technology proposes, the present invention aims to provide a kind of gas discharge tube with trigger electrode, solves the problem that existing gas discharge tube response delay is long and afterflow is large, improves lightning protection effect.
In order to realize above-mentioned technical purpose, technical scheme of the present invention is:
A kind of gas discharge tube with trigger electrode, comprise 2 main discharge electrodes, a n trigger electrode and n+1 earthenware, wherein, n >=2, described 2 main discharge electrodes are located at the two ends of gas discharge tube, n trigger electrode is sequentially arranged between 2 main discharge electrodes, is connected, is filled with inert gas in earthenware between adjacent electrode by earthenware.
Wherein, above-mentioned main discharge electrode comprises discoid conductor and cylindrical metal rod, screw thread is carved with on the surface of cylindrical metal rod, cylindrical metal rod is perpendicular to discoid conductor and be arranged on the center of discoid conductor side, the opposite side of discoid conductor is provided with circle shape groove, and the size of this circle shape groove adapts with the size of the earthenware be attached thereto, and makes earthenware be fixed on this circle shape groove.
Wherein, above-mentioned trigger electrode is disc-shaped structure, and the center of trigger electrode is provided with circular hole, and the both sides of trigger electrode are equipped with circle shape groove, and the size of this circle shape groove adapts with the size be attached thereto, and earthenware is fixed on this circle shape groove.
Wherein, the material of above-mentioned main discharge electrode is iron-nickel alloy.
Wherein, above-mentioned inert gas is argon gas.
Adopt the beneficial effect that technique scheme is brought:
(1) invention increases trigger electrode, the response time is shortened, time delay of action reduces, and improve the protected effect in lightning protection, reduce residual voltage simultaneously, reduce level of protection value, voltage protection level value is less than 2.5kV, improves the protected effect to equipment;
(2) it is large that the gas discharge tube with trigger electrode that the present invention designs has discharge capacity, under 10/350 μ s rush of current, electric current reaches 50kA, static parameter stable performance after impact, the consistency of interpolar parameter is better, can be widely used in the surge protector of I grade of test;
(3) structure of the present invention is simple, and installs and easy to process.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of main discharge electrode in the present invention, comprises (a), (b), (c) 3 width figure, is respectively the front view of main discharge electrode, left view and right view.
Fig. 3 is the structural representation of trigger electrode in the present invention, comprises (a), (b) 2 width figure, is respectively front view and the end view of trigger electrode.
Label declaration: 1,5: main discharge electrode; 2,3,4: trigger electrode; 6: earthenware.
Embodiment
Below with reference to accompanying drawing, technical scheme of the present invention is described in detail.
Structural representation of the present invention as shown in Figure 1, a kind of gas discharge tube with trigger electrode, comprises 2 main discharge electrodes 1 and 5,3 trigger electrodes, 2,3,4 and 4 earthenwares 6.Described 2 main discharge electrodes are located at the two ends of gas discharge tube, 3 trigger electrodes are sequentially arranged between 2 main discharge electrodes, be connected by earthenware between adjacent electrode (electrode herein refers to main discharge electrode and trigger electrode), in earthenware, be filled with inert gas argon gas.
The structural representation of main discharge electrode in the present invention as shown in Figure 2, comprises (a), (b), (c) 3 width figure, is respectively the front view of main discharge electrode, left view and right view.Main discharge electrode comprises discoid conductor and cylindrical metal rod, and screw thread is carved with on the surface of cylindrical metal rod, is mainly used in circuit and connects.Cylindrical metal rod is perpendicular to discoid conductor and be arranged on the center of discoid conductor side, and the opposite side of discoid conductor is provided with circle shape groove.In the present embodiment, the material of main discharge electrode is iron-nickel alloy.Main discharge electrode has two effects, and one is for the protection of the installation in circuit, and two is for fixing earthenware.Four discharge spaces that main discharge electrode and trigger electrode are formed are lightning current release channel.
The structural representation of trigger electrode in the present invention as shown in Figure 3, comprises (a), (b) 2 width figure, is respectively front view and the end view of trigger electrode.Trigger electrode is disc-shaped structure, and the center of trigger electrode is provided with circular hole, and the gas for space, the left and right sides is through, even if the space in the whole discharge tube of the circular hole of 3 trigger electrodes is through.The both sides of trigger electrode are equipped with circle shape groove.One end of trigger electrode is provided with terminals.In this example, the material of trigger electrode is iron-nickel alloy.The Main Function of trigger electrode also has two: one to be ensure the distance between adjacent two gaps; Two is for fixing earthenware.The centre of metal trigger electrode has a circular hole, and this hole can gas through between two gaps, left and right, and when there is electric discharge, free free electron can enter other space, is discharged in whole space.Use 3 trigger electrodes to be that the length of electrical discharge arc is elongated with the object of formation four discharging gaps between 2 main discharge electrodes, thus increase the residual voltage value between 2 main discharge electrodes, reduce afterflow.
The ring width of the circle shape groove on main discharge electrode or trigger electrode is equal with the pipe thickness of earthenware be attached thereto, and the internal diameter of circle shape groove on this main discharge electrode or trigger electrode is equal with the internal diameter of earthenware, makes it to be fixed on the circle shape groove of main discharge electrode or trigger electrode.Earthenware plays the effect of isolated space outerpace, makes discharge tube become a confined space, fills and can ensure that electrode is not oxidized with inert gas in this space, also makes discharge performance more stable simultaneously.Earthenware additionally provides very high insulation property.
Manufacturing process of the present invention is: first, glass powder and resin glue material is coated by the two ends outer wall of earthenware 6, be enclosed within the circle shape groove on main discharge electrode 1, then, successively trigger electrode 2,3 is installed, 4, finally, install main discharge electrode 5, whole assembling process carries out in inert gas.Heat after having assembled, treat glass powder and resin glue clinkering, cooling aft-loaded airfoil completes.Gas discharge tube inside adopts inert argon, is because inert gas stable performance, during electrode discharge, there will not be the phenomenons such as oxidation, and discharge performance between electrode is stablized.
Operation principle of the present invention is: after lightning current enters the main gap between these 2 main discharge electrodes via 2 main discharge electrodes, described inert gas argon gas punctures, the free electron produced starts to dissociate, owing to there is circular hole between each trigger electrode, so gas discharge tube is inner ionize the ionization by impact that the free electron produced can cause rapidly gas molecule between other two electrode due to argon gas, realize the repid discharge in whole space in gas discharge tube, between 2 main discharge electrodes, form electric arc.Owing to there are four gaps, this just increases the length of electrical discharge arc, thus increases the residual voltage value between two main discharge electrodes, reduces afterflow.A circular hole is had in the middle of 3 metal trigger electrodes, the effect of circular hole is when any two electric interpolar discharges, the free electron then now produced by gas ionization in gas discharge tube inside can cause rapidly ionization by impact between other two electrode, discharges rapidly, reduces the dispersiveness of electric interpolar discharge.In addition, when wherein stopping electric discharge between two electrodes, due to the composite action of a large amount of charged particle (electronics and ion), number of charged particles in gas discharge tube is reduced greatly, thus other interelectrode ionization by impact can be suppressed rapidly, make interpolar discharge rapidly by, what reduce interpolar blocks dispersiveness.In actual applications, if main discharge electrode triggers electric capacity with an indirect high pressure of 3 metal trigger electrodes respectively or is connected a ZnO varistor between main discharge electrode and any 1 trigger electrode in 3 trigger electrodes, the action of gas discharge tube can be accelerated, reduce time delay, also can reduce the residual voltage between gas discharge tube master metal sparking electrode simultaneously.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (5)
1. the gas discharge tube with trigger electrode, it is characterized in that: comprise 2 main discharge electrodes, a n trigger electrode and n+1 earthenware, wherein, n >=2, described 2 main discharge electrodes are located at the two ends of gas discharge tube, n trigger electrode is sequentially arranged between 2 main discharge electrodes, is connected, is filled with inert gas in earthenware between adjacent electrode by earthenware.
2. a kind of gas discharge tube with trigger electrode according to claim 1, is characterized in that: described main discharge electrode comprises discoid conductor and cylindrical metal rod, and screw thread is carved with on the surface of cylindrical metal rod,
Cylindrical metal rod is perpendicular to discoid conductor and be arranged on the center of discoid conductor side, the opposite side of discoid conductor is provided with circle shape groove, and the size of this circle shape groove adapts with the size of the earthenware be attached thereto, and makes earthenware be fixed on this circle shape groove.
3. a kind of gas discharge tube with trigger electrode according to claim 2, it is characterized in that: described trigger electrode is disc-shaped structure, the center of trigger electrode is provided with circular hole, the both sides of trigger electrode are equipped with circle shape groove, and the size of this circle shape groove adapts with the size be attached thereto, and makes earthenware be fixed on this circle shape groove.
4. a kind of gas discharge tube with trigger electrode according to claim 1, is characterized in that: the material of described main discharge electrode is iron-nickel alloy.
5. a kind of gas discharge tube with trigger electrode according to claim 1, is characterized in that: described inert gas is argon gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410668678.7A CN104377551A (en) | 2014-11-21 | 2014-11-21 | Gas discharge tube with trigger electrodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410668678.7A CN104377551A (en) | 2014-11-21 | 2014-11-21 | Gas discharge tube with trigger electrodes |
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| Publication Number | Publication Date |
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| CN104377551A true CN104377551A (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410668678.7A Pending CN104377551A (en) | 2014-11-21 | 2014-11-21 | Gas discharge tube with trigger electrodes |
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| CN (1) | CN104377551A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017218584A1 (en) * | 2017-10-18 | 2019-04-18 | Phoenix Contact Gmbh & Co. Kg | Gas-filled surge arrester |
| DE102020115169A1 (en) | 2020-06-08 | 2021-12-09 | Tdk Electronics Ag | Arrester and circuit arrangement with the arrester |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050140520A1 (en) * | 2003-05-05 | 2005-06-30 | Honeywell International, Inc. | Variable candela strobe with constant trigger voltage |
| CN1738135A (en) * | 2005-08-11 | 2006-02-22 | 西安交通大学 | Overvoltage protection device with initiation electrode under vacuum environment |
| CN101378178A (en) * | 2007-10-16 | 2009-03-04 | 曾献昌 | Multi-clearance ceramet gas discharge tube with circumscribing triggering terminal |
| CN201478825U (en) * | 2009-06-10 | 2010-05-19 | 东莞市新铂铼电子有限公司 | Power supply over voltage protection module for multi-gap metal gas discharge tube |
| CN203445095U (en) * | 2013-07-24 | 2014-02-19 | 爱普科斯电子(孝感)有限公司 | Gas discharge tube with high surge shock resistance |
| CN203521363U (en) * | 2013-07-18 | 2014-04-02 | 刘洪� | Multilayer ceramic gas discharge trigger tube with high follow current interruption capability |
| CN204230633U (en) * | 2014-11-21 | 2015-03-25 | 南京信息工程大学 | A kind of gas discharge tube with trigger electrode |
-
2014
- 2014-11-21 CN CN201410668678.7A patent/CN104377551A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050140520A1 (en) * | 2003-05-05 | 2005-06-30 | Honeywell International, Inc. | Variable candela strobe with constant trigger voltage |
| CN1738135A (en) * | 2005-08-11 | 2006-02-22 | 西安交通大学 | Overvoltage protection device with initiation electrode under vacuum environment |
| CN101378178A (en) * | 2007-10-16 | 2009-03-04 | 曾献昌 | Multi-clearance ceramet gas discharge tube with circumscribing triggering terminal |
| CN201478825U (en) * | 2009-06-10 | 2010-05-19 | 东莞市新铂铼电子有限公司 | Power supply over voltage protection module for multi-gap metal gas discharge tube |
| CN203521363U (en) * | 2013-07-18 | 2014-04-02 | 刘洪� | Multilayer ceramic gas discharge trigger tube with high follow current interruption capability |
| CN203445095U (en) * | 2013-07-24 | 2014-02-19 | 爱普科斯电子(孝感)有限公司 | Gas discharge tube with high surge shock resistance |
| CN204230633U (en) * | 2014-11-21 | 2015-03-25 | 南京信息工程大学 | A kind of gas discharge tube with trigger electrode |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017218584A1 (en) * | 2017-10-18 | 2019-04-18 | Phoenix Contact Gmbh & Co. Kg | Gas-filled surge arrester |
| CN109687292A (en) * | 2017-10-18 | 2019-04-26 | 菲尼克斯电气公司 | Inflatable overvoltage arrester |
| DE102017218584B4 (en) * | 2017-10-18 | 2020-01-09 | Phoenix Contact Gmbh & Co. Kg | Gas-filled surge arrester and surge protection circuit |
| DE102020115169A1 (en) | 2020-06-08 | 2021-12-09 | Tdk Electronics Ag | Arrester and circuit arrangement with the arrester |
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Application publication date: 20150225 |
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