CN204012189U - A kind of high-energy ignition gas discharging pipe - Google Patents
A kind of high-energy ignition gas discharging pipe Download PDFInfo
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- CN204012189U CN204012189U CN201420498191.4U CN201420498191U CN204012189U CN 204012189 U CN204012189 U CN 204012189U CN 201420498191 U CN201420498191 U CN 201420498191U CN 204012189 U CN204012189 U CN 204012189U
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- pole
- blind
- end cap
- exhaust
- screw thread
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Abstract
The utility model discloses a kind of high-energy ignition gas discharging pipe, comprise metallized ceramic shell, be positioned at the end cap at metallized ceramic shell two ends, two electrodes, blast pipe, blind pole and exhaust poles, form container cavity by shell and two end cap, blast pipe is communicated with exhaust pole by the first row pore being arranged in exhaust pole, end cap mid portion is to shell outer lug, the bossing of one end cap offers ending cover hole, and this ending cover hole is deflated pole and inserts and stretch in shell; Another end cap bossing contacts with blind pole one end; Blind pole is provided with the first screw thread, and exhaust pole is provided with the second screw thread, and wherein an electrode is connected with blind pole by the first screw thread, and another electrode is connected with exhaust pole by the second screw thread; In described container cavity, be filled with hydrogen-nitrogen mixture gas, and be stained with stability pulvis on its inwall.Therefore, there is stable puncture voltage, increase operating temperature range and improve useful life.
Description
Technical field
The utility model belongs to gas discharge tube technical field, specifically discloses a kind of high-energy ignition gas discharging pipe.
Background technology
High-energy ignition gas discharging pipe, is mainly used in aero-engine ignition system.In modern Aviation field, particularly military aviation field requires more and more stricter to the quality and weight of its parts and components structure.In the situation that service quality is constant, alleviating of weight is exactly often leaping of science and technology.Wherein high energy gas ignition gas discharge tube converts airborne vehicle low-voltage dc power supply to high-voltage alternating pulse current by inversion step-up circuit in aviation is used, and after rectification, storage capacitor is charged.When storage capacitor voltage is elevated to after the puncture voltage of discharge tube, discharge tube discharge breakdown, by quick the electric energy storing on storage capacitor bleed off to ignition electric nozzle, ignition electric nozzle discharge generation pilot spark ignition engine fuel.According to gas discharge theory, gas will produce disruptive discharge phenomenon under certain current field condition.The most critical factor that affects gas breakdown voltage is interelectrode distance and gas density.As shown in Figure 1, under gas componant and the certain condition of cold electrode material, gas breakdown voltage is the function of gas pressure intensity P and electrode spacing d product Pd, and while changing Pd, breakdown potential is pressed with a minimum value.
And for now, high-energy ignition gas discharging pipe plays ignition action, according to the ignition point difference of various fuel, in the time producing, different puncture voltages is set, the different energy of releasing.The main firing voltage of aviation kerosine that modern Aviation uses is between 2000V～3500V, and the voltage of requirement is high, energy is large, cannot use civilian electronic circuit to enter igniting.And present ignition gas discharge tube is set to the even more multielectrode gas discharge tube of three utmost points in order to meet requirement on electric performance electrode, these gas discharge tubes are because the increase of electrode makes requiring circuit to arrive more complicated, the utilization ratio of energy is little simultaneously, so be not suitable for aviation igniting.
Utility model content
In order to solve the deficiencies in the prior art, the purpose of this utility model is to provide a kind of high-energy ignition gas discharging pipe, has advantages of stable puncture voltage, increases operating temperature range and improve useful life.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of high-energy ignition gas discharging pipe, comprise metallized ceramic shell, be positioned at the end cap at metallized ceramic shell two ends, two electrodes, blast pipe, blind pole and exhaust poles, form a container cavity by metallized ceramic shell and two end cap, blast pipe is communicated with exhaust pole by the first row pore being arranged in exhaust pole, end cap mid portion is to metallized ceramic shell outer lug, wherein the bossing of an end cap offers ending cover hole, and this ending cover hole is deflated pole and inserts and stretch in metallized ceramic shell; Another end cap bossing contacts with blind pole one end; Blind pole is provided with the first screw thread, and exhaust pole is provided with the second screw thread, and wherein an electrode is connected with blind pole by the first screw thread, and another electrode is connected with exhaust pole by the second screw thread; In described container cavity, be filled with hydrogen-nitrogen mixture gas, and be stained with stability pulvis on its inwall.
Preferably, the electrode spacing between two electrodes is 2.6～2.8mm.
Preferably, blind pole is also provided with chamfering, is positioned at the blind hole of blind pole central shaft and the through hole with blind hole vertical interlaced, and wherein chamfering is located on the outer wall of blind pole one end.
Preferably, exhaust pole be also provided be positioned at the spacing block set of exhaust pole one end, with the second row pore of first row pore vertical interlaced, wherein spacing block set is supported mutually with the end cap outer wall that offers ending cover hole.
Preferably, described high-energy ignition gas discharging pipe also comprises lead wire, and lead wire is welded on the lateral wall of the end cap of not offering ending cover hole.
Preferably, stability pulvis is magnesium oxide (MgO) pulvis or calcium oxide (CaO) pulvis.
Preferably, electrode is made up of tungsten alloy material.
Preferably, the volume ratio of described hydrogen-nitrogen mixture gas is 1: 1.
Compared with prior art, its beneficial effect is the utility model: the technical program adopts metallized ceramic shell by discharge tube, utilize ceramic sealing alloy and pottery expand system similitude and seal, anti-mechanical strength ability is far above glass shell; The high-energy ignition gas that structurally my company produces is put pipe and is adopted simple symmetrical diode structure, makes that discharge tube quality is light, volume is little, requires that circuit is simple and capacity usage ratio is high, is applicable to the requirement of aviation igniting completely; Again by roasting mode is deposited on "dead" stability pulvis distillation on the inwall of container cavity, make the free electronic concentration in discharge tube reach stable, within the scope of-55 DEG C～215 DEG C, be no more than the puncture voltage that 80V is stable thereby obtain discharge tube puncture voltage variation of ambient temperature; By adopting tungsten gold refractory metal material to make electrode, extended the useful life of discharge tube, reach its useful life 1,200,000 times.
Brief description of the drawings
Fig. 1 is the graph of relation of puncture voltage and the Pd value of common gas.
Fig. 2 is the structural representation of high-energy ignition discharge tube described in the utility model.
Fig. 3 is end cover structure schematic diagram described in the utility model.
Fig. 4 is blind branching rod structure schematic diagram described in the utility model.
Fig. 5 is exhaust branching rod structure schematic diagram described in the utility model.
Fig. 6 is electrode structure schematic diagram described in the utility model.
Mark in figure: 1-metallized ceramic shell, 2-end cap, 21-ending cover hole, 3-electrode, 4-blast pipe, 5-lead wire, the blind pole of 6-, 61-chamfering, 62-blind hole, 63-through hole, 64-the first screw thread, 7-exhaust pole, 71-spacing block set, 72-second row pore, 73-first row pore, 74-the second screw thread.
Embodiment
There is understanding and understanding further for ease of the technological means to the utility model and operation, be elaborated as follows below in conjunction with specific embodiment.
Shown in Fig. 2, the utility model provides a kind of high-energy ignition gas discharging pipe, comprises metallized ceramic shell 1, is positioned at the end cap 2 at metallized ceramic shell 1 two ends, two electrodes 3, blast pipe 4, blind pole 6 and exhaust poles 7.In addition, described high-energy ignition gas discharging pipe also comprises lead wire 5, and lead wire 5 is welded on the lateral wall of end cap 2 of not offering ending cover hole 21, so that discharge tube uses.Wherein electrode is made up of tungsten alloy, and this tungsten alloy is a kind of refractory metal material.Electrode spacing between this two electrode 3 is 2.6～2.8mm.Optimum electrode spacing between two electrodes 3 is 2.7mm in the present embodiment.
In conjunction with shown in Fig. 3 to Fig. 6, form a container cavity by metallized ceramic shell 1 and two end cap 2, blast pipe 4 is communicated with exhaust pole 7 by the first row pore 73 being arranged in exhaust pole 7, end cap 2 mid portions are to metallized ceramic shell 1 outer lug, wherein the bossing of an end cap 2 offers ending cover hole 21, and this ending cover hole 21 is deflated pole and inserts and stretch in metallized ceramic shell 1; Another end cap 2 bossings contact with blind pole 6 one end; Blind pole 6 is provided with the first screw thread 64, and exhaust pole 7 is provided with the second screw thread 74, and wherein an electrode 3 is connected with blind pole 6 by the first screw thread 64, another electrode 3 be connected with exhaust pole 7 by the second screw thread 74.Because product work is under arc discharge condition, more than its transient temperature can reach 2000 degree, and because operational environment is under vibrator bar, the anti-mechanicalness of its connected mode requires high, and tungsten alloy and other metal be difficult to directly weld together, therefore by being to adopt to be threaded between electrode 2 and blind pole 6 and exhaust pole 7, or adopting and carry out again palladium-silver brazing hydrogen stove after being threaded and weld, thereby make discharge tube more high temperature resistant, anti-mechanical performance is better.
In addition, to utilize the adsorptivity of pulvis molecule to electronics according to adding cold stability pulvis cardinal principle, the free electron producing because of environmental change in balanced gas, makes the free electronic concentration in discharge tube reach stable, thereby obtains stable puncture voltage.In the utility model, in described container cavity, be filled with hydrogen-nitrogen mixture gas, and be stained with stability pulvis on its inwall.By roasting mode, "dead" stability pulvis distillation is deposited on the inwall of container cavity in the present embodiment, made discharge tube puncture voltage variation of ambient temperature is no more than 80V within the scope of-55 DEG C～215 DEG C by this method, can reach useful life more than 1,200,000 times, can meet instructions for use completely, and the discharge tube that adds stability pulvis does not have radioactivity, free from environmental pollution, can not jeopardize and produce and user of service's health.Wherein stability pulvis can be selected cold magnesium oxide (MgO) pulvis, and its corresponding product model is R2820, in addition can also select calcium oxide (CaO) pulvis.The volume ratio of described hydrogen-nitrogen mixture gas is 1: 1.
Shown in Fig. 4 and Fig. 5, blind pole 6 is also provided with chamfering 61, be positioned at the blind hole 62 of blind pole 6 central shafts and with the through hole 63 of blind hole 62 vertical interlaceds wherein chamfering 61 be located on the outer wall of blind pole 6 one end.Because the confined space in vacuum device inside can not be accomplished definitely airtight, making to vacuumize difficulty increases, after in the time being filled with working gas, can make working gas impure because of gas diffusion, thereby affect properties of product, but the present embodiment, after electrode 3 and 6 welding of blind pole, by blind hole 62 and through hole 63, can be eliminated this hidden danger.Blind hole 62 also reduces product weight simultaneously.But in aviation articles for use, weight is a very important parameter.
Exhaust pole 7 be also provided be positioned at the spacing block set 71 of exhaust pole 7 one end, with the second row pore 72 of first row pore 73 vertical interlaceds, wherein spacing block set 71 is supported mutually with end cap 2 outer walls that offer ending cover hole 21.Be connected into interiors of products by first row pore 72 and second row pore 73 in the present embodiment, for by blast pipe 4, interiors of products being vacuumized and is filled with working gas, also for adding stability pulvis.
High-energy ignition gas discharging pipe described in the utility model has stable breakdown voltage, and operating temperature range is large, and the advantage of long service life.Be specially: discharge tube fluctuates and is no more than 60V in puncture voltage 40s under identical energy level condition, and discharge tube operating temperature range reaches-55 DEG C～215 DEG C, and in this operating temperature range, product puncture voltage is no more than 80V with respect to the drift of normal temperature.Make electrode because discharge tube described in the utility model adopts resistance to sputter, exotic material in addition, the life-span can reach more than 1,200,000 times.
The technique of discharge tube described in the utility model is mainly described as follows:
One, homogeneous tube sealing-in
Discharge tube is inflated ion device, so require high to air-tightness.Environment for use has determined that discharge tube needs good resistance to elevated temperatures simultaneously, so in the homogeneous tube sealing-in process of discharge tube, we have adopted the method for sealing of the fine weldering of vacuum furnace silver-bearing copper, make discharge tube structurally can bear the high temperature of 700 DEG C.
Two, control product puncture voltage
According to the different model of product, the puncture voltage of product is very different, general being trapped among in 300V of puncture voltage of single product.For accurate general the enclosing of puncture voltage of controlling product, in process of production exhaust is decided to be to our critical process.Wherein in exhaust process, mainly take baked goods by air release in material out, thereby improved the purity that is filled with gas; Adopt again baking powder technology by the fusing of stability pulvis, make it to be attached to tube wall, avoid affecting puncture voltage in the time of vibration work; Exchange again again ageing product, allow product carry out glow discharge, from " dirt " on face clearing electrode surface; And then direct current ageing product, allow product carry out arc discharge, by the table thorn on arc discharge clearing electrode surface; Finally inflation, substantially will interiors of products be processed after clean and is filled with gas by processing step described before inflation, and on exhaust station adjustments of gas pressure, make product puncture voltage reach necessary requirement.
Claims (7)
1. a high-energy ignition gas discharging pipe, comprise metallized ceramic shell (1), be positioned at the end cap (2) at metallized ceramic shell (1) two ends, two electrodes (3), blast pipe (4), blind pole (6) and exhaust pole (7), form a container cavity by metallized ceramic shell (1) and two end cap (2), blast pipe (4) is communicated with exhaust pole (7) by the first row pore (73) being arranged in exhaust pole (7), it is characterized in that, end cap (2) mid portion is to metallized ceramic shell (1) outer lug, wherein the bossing of an end cap (2) offers ending cover hole (21), this ending cover hole (21) is deflated pole and inserts and stretch in metallized ceramic shell (1), another end cap (2) bossing contacts with blind pole (6) one end, blind pole (6) is provided with the first screw thread (64), exhaust pole (7) is provided with the second screw thread (74), wherein an electrode (3) is connected with blind pole (6) by the first screw thread (64), and another electrode (3) is connected with exhaust pole (7) by the second screw thread (74).
2. discharge tube according to claim 1, is characterized in that, the electrode spacing between two electrodes (3) is 2.6～2.8mm.
3. discharge tube according to claim 1, it is characterized in that, blind pole (6) is also provided with chamfering (61), is positioned at the blind hole (62) of blind pole (6) central shaft and the through hole (63) with blind hole (62) vertical interlaced, and wherein chamfering (61) is located on the outer wall of blind pole (6) one end.
4. discharge tube according to claim 1, it is characterized in that, exhaust pole (7) be also provided be positioned at the spacing block set (71) of exhaust pole (7) one end, with the second row pore (72) of first row pore (73) vertical interlaced, wherein spacing block set (71) is supported mutually with end cap (2) outer wall that offers ending cover hole (21).
5. discharge tube according to claim 1, it is characterized in that, described high-energy ignition gas discharging pipe also comprises lead wire (5), and lead wire (5) is welded on the lateral wall of end cap (2) of not offering ending cover hole (21).
6. discharge tube according to claim 1, is characterized in that, stability pulvis is magnesium oxide pulvis or calcium oxide pulvis.
7. discharge tube according to claim 1, is characterized in that, electrode is made up of tungsten alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420498191.4U CN204012189U (en) | 2013-11-14 | 2014-08-30 | A kind of high-energy ignition gas discharging pipe |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320717561 | 2013-11-14 | ||
| CN201320717561.4 | 2013-11-14 | ||
| CN201420498191.4U CN204012189U (en) | 2013-11-14 | 2014-08-30 | A kind of high-energy ignition gas discharging pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204012189U true CN204012189U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420498191.4U Expired - Fee Related CN204012189U (en) | 2013-11-14 | 2014-08-30 | A kind of high-energy ignition gas discharging pipe |
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| CN (1) | CN204012189U (en) |
Cited By (2)
| 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 |
| CN115021083A (en) * | 2022-05-31 | 2022-09-06 | 西北核技术研究所 | Ceramic packaging sealed low-jitter self-breakdown gas switch |
-
2014
- 2014-08-30 CN CN201420498191.4U patent/CN204012189U/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 |
| CN115021083A (en) * | 2022-05-31 | 2022-09-06 | 西北核技术研究所 | Ceramic packaging sealed low-jitter self-breakdown gas switch |
| CN115021083B (en) * | 2022-05-31 | 2023-10-20 | 西北核技术研究所 | Ceramic package sealing type low-jitter self-breakdown gas switch |
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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: 20141210 Termination date: 20150830 |
|
| EXPY | Termination of patent right or utility model |