CN108060980B - A kind of ignition electric nozzle ignition end cooling duct - Google Patents
A kind of ignition electric nozzle ignition end cooling duct Download PDFInfo
- Publication number
- CN108060980B CN108060980B CN201711239215.9A CN201711239215A CN108060980B CN 108060980 B CN108060980 B CN 108060980B CN 201711239215 A CN201711239215 A CN 201711239215A CN 108060980 B CN108060980 B CN 108060980B
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- Prior art keywords
- ignition
- cooling
- jet pipe
- hole
- electric nozzle
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/26—Starting; Ignition
- F02C7/264—Ignition
- F02C7/266—Electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Spark Plugs (AREA)
Abstract
The invention discloses a kind of ignition electric nozzle ignition end cooling ducts, jet pipe including ignition tip, the jet pipe is internally provided with the wiring screw rod being overlapped with nozzle axis, the top of wiring screw rod is provided with resistance sealant, central electrode is installed on resistance sealant, jet pipe is provided with cooling hole close to one end of central electrode, the front end of central electrode is provided with semi-conducting glaze, gap between cooling hole and semi-conducting glaze is ignition end face, the side of the jet pipe is provided with recirculation hole, the cooling tube of connection recirculation hole and cooling hole is provided on the inside of jet pipe, the cooling tube of connection is provided on ignition electric nozzle, cooling hole, recirculation hole, the end face of ignition electric nozzle is cooled down, improve the service life of ignition electric nozzle, improve the reliability of ignition electric nozzle, in the ignition electric nozzle course of work, cooling tube is flowed by air-flow or other cooled material body circulations, It realizes the cooling function to ignition electric nozzle ignition end, effectively alleviates the high-temperature work environment of ignition electric nozzle.
Description
Technical field
The present invention relates to electrical fire system regions, are a kind of ignition electric nozzle ignition end cooling ducts specifically.
Background technique
Ignition electric nozzle is one of critical component in aero-engine ignition system, and function is the height for generating igniter
Piezoelectricity energy impulse is converted to electric spark, with the indoor combustible oil gas mixture of ignition engine burning.Aero-engine point at present
The most commonly used is surface discharge plug and semiconductor discharge plug, surface discharge plug long-term works under high temperature environment side electricity easily occurs for thermoelectricity mouth
Pole ablation phenomen, and then increase the firing voltage of ignition electric nozzle, influence the ignition performance of ignition system；Semiconductor discharge plug is in height
Long-term work under warm environment, the easy ablation of semi-conducting glaze glaze layer, abrasion lead to the reduction of product service life.Currently, designer from
It is multi-faceted to be designed improvement, the life and reliability of product is promoted, such as find heat-resisting material and reduce sparking plug ignition end
Temperature etc., ignition electric nozzle end face during flame end face and side wall by it is strong it is roasting burn, cause ignition electric nozzle long-term
Temperature constantly increases in use process, has seriously affected the service life of ignition electric nozzle.
Summary of the invention
The purpose of the present invention is to provide a kind of ignition electric nozzle ignition end cooling ducts, reduce the ignition end of ignition electric nozzle
Temperature.
The present invention is achieved through the following technical solutions:
A kind of ignition electric nozzle ignition end cooling duct, the jet pipe including ignition tip, the jet pipe is internally provided with and jet pipe
The wiring screw rod that axis is overlapped, the top of the wiring screw rod is provided with resistance sealant, is equipped on the resistance sealant
Central electrode, the jet pipe are provided with cooling hole close to one end of central electrode, and the front end of the central electrode, which is provided with, partly leads
Body glaze, the gap between the cooling hole and semi-conducting glaze is ignition end face, and the side of the jet pipe is provided with recirculation hole, described
The cooling tube of connection recirculation hole and cooling hole is provided on the inside of jet pipe.
Preferably, the central angles such as described cooling hole are arranged on the end face of close central electrode of jet pipe.
Preferably, the central angles such as described recirculation hole are arranged on the side wall of jet pipe.
Preferably, the cooling tube and recirculation hole are tightly connected, and the cooling tube is fixedly connected with the inner wall of jet pipe.
Preferably, it is clamped between the cooling hole and cooling tube, the material of cooling tube is metal.
Preferably, the cooling hole interconnected, cooling tube, recirculation hole be point-blank.
Concretely, structural principle of the invention, the circumference side of jet pipe are provided with recirculation hole, the central angles such as recirculation hole point
Cloth, each recirculation hole are tightly connected a cooling tube in jet pipe, in order to guarantee the leakproofness in jet pipe, cooling tube and circulation
Hole is tightly connected, and cooling tube is fixedly connected with the inner wall of jet pipe, is placed cooling tube and is loosened in jet pipe, outside the ignition end face of jet pipe
The central angles such as side are provided with cooling hole, each cooling hole corresponding cooling tube is clamped between cooling hole and cooling tube, cooling
The detachable maintaining in hole, each group of interconnected cooling hole, cooling tube, recirculation hole guarantee that air is most quick on same straight line
Degree circulation improves the effect of cooling cycle, and wiring screw rod connects high voltage power supply, and central electrode and lateral electrode are lighted a fire, semi-conducting glaze
Central electrode is protected, prevents central electrode temperature excessively high, during the work time, temperature increases for ignition end face, peripheral gas flow circulation
Speed is accelerated, and air is flowed into from recirculation hole, by cooling tube, excludes from cooling hole, the air circulated reduces ignition end face
Temperature, realize to the cooling function at ignition electric nozzle ignition end, effectively alleviate the high-temperature work environment of ignition electric nozzle, effectively
The lateral electrode ablation of ignition electric nozzle and the semiconductor glaze layer ablation of semiconductor component, abrasion are reduced, thus increasing ignition sparking plug
Service life enhances the reliability of ignition system.
Compared with prior art, the present invention have the following advantages that and the utility model has the advantages that
(1) cooling tube, cooling hole, recirculation hole of connection are provided on ignition electric nozzle, the end face of ignition electric nozzle is cooled down,
It improves the service life of ignition electric nozzle, improve the reliability of ignition electric nozzle.
(2) in the ignition electric nozzle course of work, cooling tube is flowed by air-flow or other cooled material body circulations, is realized to point
The cooling function at thermoelectricity mouth ignition end effectively alleviates the high-temperature work environment of ignition electric nozzle.
(3) setting of cooling hole is effectively reduced the lateral electrode ablation of ignition electric nozzle and the semiconductor glaze layer of semiconductor component
Ablation, abrasion, so that the service life of increasing ignition sparking plug, enhances the reliability of ignition system.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is side structure schematic diagram of the invention；
Wherein 1- wiring screw rod, 2- cooling tube, 3- jet pipe, 4- resistance sealant, 5- central electrode, 6- cooling hole, 7- hair
Fire end face, 8- semi-conducting glaze, 9- recirculation hole.
Specific embodiment
The present invention is described in further detail below with reference to the preferred embodiment of the present invention, but embodiment party of the invention
Formula is without being limited thereto.
Embodiment 1:
In conjunction with shown in attached drawing 1, attached drawing 2, a kind of ignition electric nozzle ignition end cooling duct, the jet pipe 3 including ignition tip is described
Jet pipe 3 is internally provided with the wiring screw rod 1 being overlapped with 3 axis of jet pipe, and the top of the wiring screw rod 1 is provided with resistance sealant
4, central electrode 5 is installed on the resistance sealant 4, the jet pipe 3 is provided with cooling hole 6 close to one end of central electrode 5,
The front end of the central electrode 5 is provided with semi-conducting glaze 8, and the gap between the cooling hole 6 and semi-conducting glaze 8 is ignition end face
7, the side of the jet pipe 3 is provided with recirculation hole 9, and the cooling of connection recirculation hole 9 and cooling hole 6 is provided on the inside of the jet pipe 3
Pipe 2.
Structural principle:
The circumference side of jet pipe 3 is provided with recirculation hole 9, the equal central angles distribution of recirculation hole 9, and the sealing of each recirculation hole 9 connects
A cooling tube 2 in jet pipe 3 is connect, in order to guarantee the leakproofness in jet pipe 3, cooling tube 2 and recirculation hole 9 are tightly connected, cooling
Pipe 2 is fixedly connected with the inner wall of jet pipe 3, is placed cooling tube 2 and is loosened in jet pipe 3, the centers of circle such as 7 outside of ignition end face of jet pipe 3
Angle is provided with cooling hole 6, each cooling hole 6 corresponding cooling tube 2 is clamped, cooling hole 6 between cooling hole 6 and cooling tube 2
Detachable maintaining, each group of interconnected cooling hole 6, cooling tube 2, recirculation hole 9 guarantee that air is most fast on same straight line
Speed circulation improves the effect of cooling cycle, and wiring screw rod 1 connects high voltage power supply, and central electrode 5 and lateral electrode are lighted a fire, partly led
Body glaze 8 protects central electrode 5, prevents 5 temperature of central electrode excessively high, and during the work time, temperature increases, periphery for ignition end face 7
Airflow speed is accelerated, and air is flowed into from recirculation hole 9, by cooling tube 2, excludes from cooling hole 6, the air drop circulated
The temperature of low ignition end face 7 realizes the cooling function to ignition electric nozzle ignition end, effectively alleviates the hot operation of ignition electric nozzle
Environment is effectively reduced the lateral electrode ablation of ignition electric nozzle and 8 layers of ablation of semi-conducting glaze of semiconductor component, abrasion, to mention
The service life for rising ignition electric nozzle, enhances the reliability of ignition system.
Embodiment 2
In order to improve the cooling effect of ignition end face 7, guarantee the safety of ignition electric nozzle, in the structure and principle of embodiment 1
On the basis of, further combined with shown in attached drawing 1, attached drawing 2, jet pipe 3 is arranged in the equal central angles of cooling hole 6 described in the present embodiment
On the end face of central electrode 5, the recirculation hole 9 waits central angles to be arranged on the side wall of jet pipe 3.
Structural principle:
The outside of ignition end face 7 is arranged in the central angles such as cooling hole 6, and the equal central angles of recirculation hole 9 are arranged outside 3 circumference of jet pipe
On side, cooling hole 6 and jet pipe 3 are fixed with the cooling tube 2 of connection cooling hole 6 and recirculation hole 9, mutually to corresponding inside jet pipe 3
Each group of cooling hole 6, cooling tube 2, the recirculation hole 9 of connection guarantee that air prestissimo circulates on same straight line, improve cold
But the effect recycled, in 7 course of work of ignition end face, temperature is increased, and peripheral gas flow velocity of liquid assets is accelerated, and air is from recirculation hole
9 flow into, and by cooling tube 2, exclude from cooling hole 6, and the air circulated reduces the temperature of ignition end face 7, realizes to igniting
The cooling function at sparking plug ignition end effectively alleviates the high-temperature work environment of ignition electric nozzle, is effectively reduced the side of ignition electric nozzle
The 8 layers of ablation of electrode erosion and the semi-conducting glaze of semiconductor component, abrasion, so that the service life of increasing ignition sparking plug, enhances point
The reliability of fiery system, recirculation hole 9 and cooling hole 6 connect circulating line, and circulating line connects cooling system, and cooling system is water
Cold or air cooling opens cooling system when ignition end face 7 works, and cooling system circulates, and reduces by 3 inner wall of jet pipe
With the temperature of ignition end face 7.
Embodiment 3
In order to improve the practicability of ignition electric nozzle, guarantee the service life of ignition electric nozzle, in the structure and principle of embodiment 1
On the basis of, further combined with shown in attached drawing 1, attached drawing 2, cooling tube 2 described in the present embodiment and recirculation hole 9 are tightly connected, institute
State cooling tube 2 to be fixedly connected with the inner wall of jet pipe 3, be clamped between the cooling hole 6 and cooling tube 2, it is described interconnect it is cold
But hole 6, cooling tube 2, recirculation hole 9 be point-blank.
Structural principle:
Recirculation hole 9 on cooling tube 2 and jet pipe 3 is tightly connected, and cooling tube 2 is fixedly connected with 3 inner wall of jet pipe, guarantees igniting
The stability of sparking plug is clamped between cooling tube 2 and cooling hole 6, facilitates the detachable maintaining of cooling hole 6, and interconnected each group
Cooling hole 6, cooling tube 2, recirculation hole 9 guarantee that air prestissimo circulates on same straight line, improve the effect of cooling cycle.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is all according to
According to technical spirit any simple modification to the above embodiments of the invention, equivalent variations, protection of the invention is each fallen within
Within the scope of.
Claims (6)
1. a kind of ignition electric nozzle ignition end cooling duct, which is characterized in that the jet pipe (3) including ignition tip, the jet pipe (3) are interior
Portion is provided with the wiring screw rod (1) being overlapped with jet pipe (3) axis, and the top of the wiring screw rod (1) is provided with resistance sealant
(4), it is equipped with central electrode (5) on the resistance sealant (4), the jet pipe (3) is arranged close to the one end of central electrode (5)
Have cooling hole (6), the front end of the central electrode (5) is provided with semi-conducting glaze (8), the cooling hole (6) and semi-conducting glaze (8)
Between gap be ignition end face (7), the side of the jet pipe (3) is provided with recirculation hole (9), setting on the inside of the jet pipe (3)
There is the cooling tube (2) of connection recirculation hole (9) Yu cooling hole (6)；The cooling tube (2) is fixedly connected with the inner wall of jet pipe (3).
2. a kind of ignition electric nozzle ignition end cooling duct according to claim 1, which is characterized in that the cooling hole (6)
Equal central angles are arranged on the end face of the close central electrode (5) of jet pipe (3).
3. a kind of ignition electric nozzle ignition end cooling duct according to claim 2, which is characterized in that the recirculation hole (9)
Equal central angles are arranged on the side wall of jet pipe (3).
4. a kind of ignition electric nozzle ignition end cooling duct according to claim 3, which is characterized in that the cooling tube (2)
It is tightly connected with recirculation hole (9).
5. a kind of ignition electric nozzle ignition end cooling duct according to claim 4, which is characterized in that the cooling hole (6)
It is clamped between cooling tube (2).
6. a kind of ignition electric nozzle ignition end cooling duct according to claim 4, which is characterized in that the cooling interconnected
Hole (6), cooling tube (2), recirculation hole (9) are point-blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711239215.9A CN108060980B (en) | 2017-11-30 | 2017-11-30 | A kind of ignition electric nozzle ignition end cooling duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711239215.9A CN108060980B (en) | 2017-11-30 | 2017-11-30 | A kind of ignition electric nozzle ignition end cooling duct |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108060980A CN108060980A (en) | 2018-05-22 |
| CN108060980B true CN108060980B (en) | 2019-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711239215.9A Active CN108060980B (en) | 2017-11-30 | 2017-11-30 | A kind of ignition electric nozzle ignition end cooling duct |
Country Status (1)
| Country | Link |
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| CN (1) | CN108060980B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377309B (en) * | 2020-11-13 | 2022-09-13 | 四川泛华航空仪表电器有限公司 | Repairable aeroengine ignition electric nozzle device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3990834A (en) * | 1973-09-17 | 1976-11-09 | General Electric Company | Cooled igniter |
| US7216488B2 (en) * | 2004-07-20 | 2007-05-15 | General Electric Company | Methods and apparatus for cooling turbine engine combustor ignition devices |
| JP5022465B2 (en) * | 2009-04-09 | 2012-09-12 | 日本特殊陶業株式会社 | Spark plug for internal combustion engine and method for manufacturing the same |
| CN201908766U (en) * | 2010-10-29 | 2011-07-27 | 四川泛华航空仪表电器厂 | Low-pressure high-energy electric ignition semiconductor spark plug |
| JP5650179B2 (en) * | 2012-10-02 | 2015-01-07 | 日本特殊陶業株式会社 | Spark plug |
| US20160003150A1 (en) * | 2014-07-03 | 2016-01-07 | General Electric Company | Igniter tip with cooling passage |
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2017
- 2017-11-30 CN CN201711239215.9A patent/CN108060980B/en active Active
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| Publication number | Publication date |
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| CN108060980A (en) | 2018-05-22 |
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