CN102678339B - Plasma igniter with reusable cathode - Google Patents
Plasma igniter with reusable cathode Download PDFInfo
- Publication number
- CN102678339B CN102678339B CN201210169749.XA CN201210169749A CN102678339B CN 102678339 B CN102678339 B CN 102678339B CN 201210169749 A CN201210169749 A CN 201210169749A CN 102678339 B CN102678339 B CN 102678339B
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- base
- cathode
- negative electrode
- flange
- anode
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- Ignition Installations For Internal Combustion Engines (AREA)
- Spark Plugs (AREA)
Abstract
The invention aims to provide a plasma igniter with a reusable cathode. The igniter comprises the cathode, an anode, a flange, a base, insulating ceramic and a thickness-adjustable gasket, wherein the base and the anode are respectively arranged in the two ends of the flange; the base is matched with the flange through threads; the cathode and the insulating ceramic are arranged in the base and the anode; the insulating ceramic wraps the cathode; the gasket is arranged between the base and the flange; the cathode, the insulating ceramic and the base are integrally formed; and the cathode and the insulating ceramic can move along with the base. The service life of the cathode can be prolonged, materials are saved, and the manufacturing cost of the plasma igniter is reduced.
Description
Technical field
What the present invention relates to is a kind of gas turbine, specifically the igniter of gas turbine.
Background technique
Nowadays gas turbine, due to advantages such as its power are large, weight and size is little, efficiency is high, mobility is good, is widely used and develops at numerous areas such as aviation, boats and ships, generatings.In the start-up course of gas turbine, igniting is crucial, and the success rate of igniting will be directly connected to the safe and reliable operation of whole device.
At present, conventional gas turbine firing mode has the direct ignition of high energy spark discharge, semiconductor surface discharge igniting, indirect igniting etc.Spark ignition energy is lower, and spark delay is long.Although semiconductor surface discharge igniting can obtain larger igniting power, due to semi-conductive life problems, directly affect performance and the life-span of whole ignition mechanism, and electromagnetic radiation is quite serious.Igniting, need to be equipped with extra petroleum system indirectly, and system complexity is higher, and the carbon distribution problem of frequent origination point firearm sparking plug, the Safety performance of serious threat gas turbine.
Plasma ignition is a kind of novel firing technique in recent years, utilizes arc excitation high-temperature plasma pilot fuel.Its advantage is that ignition success rate is large, can improve the reliability of igniting and the stability of burning; Can widen the limit of concentration of igniting; Avoid due to the repeatedly generation of the bad firing chamber deflagration phenomenon causing of cold start-up and fuel-oil atmozation.When adopting plasma-arc direct ignition, larger by the electric current of negative electrode, negative electrode head extreme temperatures, even if negative electrode has adopted high-temperature alloy material, and certain pneumatic cooling method, it is very serious that the ablation of negative electrode remains.When the nose ablation of negative electrode acquires a certain degree, the discharging gap between negative and positive the two poles of the earth is excessive, the conducting of cannot discharging, thus cannot light a fire, cause sometimes, in the electric discharge of negative electrode root, plasma-arc to be blown out to nozzle.Plasma igniter must again be changed and could work, and because negative electrode high-temperature alloy cost is high, has so both wasted material, also virtually strengthening cost of production, meanwhile, the replacing of igniter also can affect the operation of a whole set of unit, has had a strong impact on the performance of unit.
Summary of the invention
The plasma igniter that the object of the present invention is to provide a kind of negative electrode in the working life that extends plasma igniter to reuse.
The object of the present invention is achieved like this:
The plasma igniter that a kind of negative electrode of the present invention can reuse, comprise negative electrode, anode, flange, base, insulating ceramics, it is characterized in that: also comprise the pad that thickness is adjustable, base and anode are arranged on respectively in the two ends of flange, base by thread coordinates with flange, and negative electrode and insulating ceramics are arranged in base and anode, and insulating ceramics wraps in the outside of negative electrode, pad is arranged between base and flange, and negative electrode, insulating ceramics form one, also can move with base with base.
The present invention can also comprise:
1, also comprise sealing gasket and hold-down ring, hold-down ring is arranged between base and pad, and sealing gasket is arranged between insulating ceramics and hold-down ring.
Advantage of the present invention is: the present invention can extend the working life of negative electrode, saves material, reduces the manufacture cost of plasma igniter.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of pad.
Embodiment
Below in conjunction with accompanying drawing, for example the present invention is described in more detail:
In conjunction with Fig. 1～2, the present invention includes negative electrode 1, anode 2, flange 3, pad 4, hold-down ring 5, sealing gasket 6, insulating ceramics 7 and base 8.
The negative electrode 1 of plasma igniter is after repeatedly utilizing, and its head can be ablated, makes the distance of itself and anode 2 excessive, has surpassed discharging gap, thereby has caused plasma igniter cisco unity malfunction.For anticathode 1, realize recycling, operating process of the present invention is as follows:
Between the flange 3 of plasma igniter and hold-down ring 5, added the adjustable pad of thickness 4, when isoionic negative electrode 1 is when ablation can not be lighted a fire, reduce the thickness of pad 4, then by screw thread precession base 8, subsidiary hold-down ring 5, sealing gasket 6, insulating ceramics 7 move forward together with negative electrode 1, make the head of negative electrode 1 again reach efficient working range, guarantee that plasma igniter can work.
By the adjustment of pad 4 thickness and the precession of base, ablation within efficient working range, is got rid of for the impact of plasma igniter, the normal operation of guarantee point firearm all the time in the gap of realizing negative and positive the two poles of the earth; Insulating ceramics 7 can be realized high-tension insulation simultaneously, and guarantee point firearm is reliably working under high temperature, high voltage environment; Adopt graphite gasket to seal, guaranteed that the electricity cable of igniter afterbody is not by hot gas ablation.
Claims (1)
1. the plasma igniter that negative electrode can reuse, comprise negative electrode, anode, flange, base, insulating ceramics, sealing gasket and hold-down ring, it is characterized in that: also comprise the pad that thickness is adjustable, base and anode are arranged on respectively in the two ends of flange, base by thread coordinates with flange, negative electrode and insulating ceramics are arranged in base and anode, insulating ceramics wraps in the outside of negative electrode, pad is arranged between base and flange, and negative electrode, insulating ceramics form one, also can move with base with base;
Hold-down ring is arranged between base and pad, and sealing gasket is arranged between insulating ceramics and hold-down ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210169749.XA CN102678339B (en) | 2012-05-29 | 2012-05-29 | Plasma igniter with reusable cathode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210169749.XA CN102678339B (en) | 2012-05-29 | 2012-05-29 | Plasma igniter with reusable cathode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102678339A CN102678339A (en) | 2012-09-19 |
| CN102678339B true CN102678339B (en) | 2014-01-29 |
Family
ID=46810802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210169749.XA Expired - Fee Related CN102678339B (en) | 2012-05-29 | 2012-05-29 | Plasma igniter with reusable cathode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102678339B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980209B (en) * | 2012-11-27 | 2015-02-25 | 哈尔滨工程大学 | Plasma catalysis ignition integrated nozzle |
| CN102980204A (en) * | 2012-11-27 | 2013-03-20 | 哈尔滨工程大学 | Fuel-atomizing integrated igniter |
| CN105484873B (en) * | 2015-12-04 | 2017-08-29 | 北京汽车研究总院有限公司 | A kind of plasma igniter, engine and automobile |
| CN108005790B (en) * | 2017-11-29 | 2020-06-26 | 中国人民解放军空军工程大学 | Aero-engine plasma jet igniter based on self-air-entraining |
| CN110439691B (en) * | 2019-08-06 | 2020-06-23 | 中国人民解放军空军工程大学 | Plasma on-duty flame igniter based on aircraft engine afterburner |
| CN112664324A (en) * | 2020-12-16 | 2021-04-16 | 陕西航空电气有限责任公司 | Aviation ignition electric nozzle capable of adjusting discharge gap |
| CN115856397B (en) * | 2022-12-09 | 2023-08-25 | 哈尔滨工程大学 | Discharge voltage measurement auxiliary tool of plasma ignition system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB420845A (en) * | 1933-08-03 | 1934-12-10 | Ernest Walter Cleveland | Improvements in or relating to sparking plugs |
| US2195543A (en) * | 1939-06-26 | 1940-04-02 | Clifford M Songer | Spark plug |
| US4764703A (en) * | 1987-08-19 | 1988-08-16 | Allied-Signal Inc. | Igniter plug with vibration damping means |
| CN2814892Y (en) * | 2005-07-29 | 2006-09-06 | 北京理研社技术有限公司 | Negative pole structure capable of making controlled compensation to consuming part |
| CN2883947Y (en) * | 2006-01-06 | 2007-03-28 | 哈尔滨工程大学 | Pulse plasma ignitor |
| CN202718760U (en) * | 2012-05-29 | 2013-02-06 | 哈尔滨工程大学 | Plasma ignitor with reusable cathode |
-
2012
- 2012-05-29 CN CN201210169749.XA patent/CN102678339B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102678339A (en) | 2012-09-19 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20190529 |
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| CF01 | Termination of patent right due to non-payment of annual fee |