CN109339953B - Telescopic ignition electric nozzle - Google Patents
Telescopic ignition electric nozzle Download PDFInfo
- Publication number
- CN109339953B CN109339953B CN201811327858.3A CN201811327858A CN109339953B CN 109339953 B CN109339953 B CN 109339953B CN 201811327858 A CN201811327858 A CN 201811327858A CN 109339953 B CN109339953 B CN 109339953B
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- electric nozzle
- flange plate
- sealing ring
- sealing
- ignition
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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
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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)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The invention belongs to the field of combustion engine ignition systems, and particularly relates to a telescopic ignition electric nozzle. The electric nozzle comprises an electric nozzle assembly, a front flange plate, a rear flange plate, an air cylinder, a spring, a limiting gasket, a Stent seal, a sealing ring and a sealing sleeve. The telescopic ignition electric nozzle can provide ignition under the no-load state of a combustion engine, and the electric nozzle part extends into a combustion chamber to be ignited again under the working conditions of high pressure and high temperature by supplying pressure through the air pump. The problem that the electric nozzle component is in a high-pressure and high-temperature working environment for a long time can be fundamentally solved, so that the reliability of the ignition electric nozzle is improved.
Description
Technical Field
The invention belongs to the field of combustion engine ignition systems, and particularly relates to a telescopic ignition electric nozzle.
Background
Ignition system products are important components of gas turbines, where an ignition torch is used to electrically convert a high voltage pulse generated by an ignition device into an electrical spark to ignite a fuel in a combustion chamber. The ignition electric nozzle is generally arranged on a combustion chamber casing, and the front end of the ignition electric nozzle is arranged in the combustion chamber, so that the performance and the service life of a product are seriously influenced when the ignition electric nozzle is in a high-temperature and high-pressure working state for a long time, and the product is particularly characterized by ablation of the end face of the ignition electric nozzle, damage of a semiconductor block, rise of ignition voltage, failure of air tightness and the like.
Disclosure of Invention
The invention provides a telescopic ignition electric nozzle in order to meet the characteristic requirements of high energy and long service life of an ignition system of a combustion engine, which can fundamentally solve the problem that an electric nozzle part is in a high-pressure and high-temperature working environment for a long time, thereby improving the reliability of the ignition electric nozzle.
The invention adopts the following technical scheme for solving the technical problems:
a telescopic ignition electric nozzle comprises an electric nozzle component, a front flange plate, a rear flange plate, a cylinder, a spring, a limiting washer, a Stent seal, a sealing ring a, a sealing ring b, a sealing ring c, a flat washer, a spring washer, a nut, a stud and a sealing sleeve; the electric nozzle assembly is fixed in the cylinder through a front flange and a rear flange after being in threaded connection with the sealing sleeve; the spring is positioned in the mounting grooves of the front flange plate and the sealing sleeve, and the front flange plate and the rear flange plate are fastened through the stud, the flat washer, the spring washer and the nut; the limiting washer, the Stent seal and the sealing ring a are arranged in a sealing groove in the sealing sleeve; the sealing ring b is arranged in the sealing groove outside the sealing sleeve; and the sealing ring c is arranged in the inner sealing groove of the rear flange plate.
In a free state, the electric nozzle end of the electric nozzle assembly is positioned outside the combustion chamber; high-pressure gas is introduced into the air holes of the rear flange plate, so that the electric nozzle assembly can be driven to move towards the front flange plate, and the end head of the electric nozzle extends into the combustion chamber.
The sliding seal between the seal sleeve and the front flange plate is realized through a limit gasket, a Stent seal and a seal ring a; the sliding seal between the seal sleeve and the cylinder is realized through the seal ring b; and the sliding seal between the seal sleeve and the rear flange plate is realized through the seal ring c.
And the sealing ring a, the sealing ring b and the sealing ring c are made of graphite materials.
The invention has the beneficial effects that:
by designing the telescopic mechanism, the problem that a nozzle part of the ignition nozzle is in a high-pressure and high-temperature working environment for a long time is solved, so that the reliability of the ignition nozzle is improved; the sliding sealing performance of the telescopic mechanism is ensured through graphite ring sealing; the graphite ring has the high temperature resistance, and the graphite ring can normally work at the high temperature of 450 ℃.
Drawings
Fig. 1 is a half sectional view of the active retractable ignition nozzle of the present invention.
Number in the figure: the electric nozzle comprises a nozzle assembly 1, a front flange plate 2, a rear flange plate 3, a cylinder 4, a spring 5, a limiting washer 6, a 7-steckel seal, a sealing ring 8 a, a sealing ring 9 b, a sealing ring 10 c, a flat washer 11, a spring washer 12, a nut 13, a stud 14 and a sealing sleeve 15.
Detailed Description
The technical scheme of the invention is explained in detail by combining the drawings and the specific embodiments.
As shown in fig. 1, the retractable ignition electric nozzle comprises an electric nozzle assembly 1, a front flange 2, a rear flange 3, a cylinder 4, a spring 5, a limit washer 6, a steckel seal 7, a sealing ring a8, a sealing ring b9, a sealing ring c10, a flat washer 11, a spring washer 12, a nut 13, a stud 14 and a sealing sleeve 15.
The electric nozzle assembly 1 is fixed in the cylinder 4 through a front flange 2 and a rear flange 3 after being in threaded connection with a seal sleeve 15; the spring 5 is positioned in the mounting grooves of the front flange 2 and the sealing sleeve 15, and the front flange 2 and the rear flange 3 are fastened through a stud 14, a flat washer 11, a spring washer 12 and a nut 13; the limiting gasket 6, the Stent seal 7 and the sealing ring a8 are arranged in the sealing groove in the sealing sleeve 15; the sealing ring b9 is arranged in the outer sealing groove of the sealing sleeve 15; the sealing ring c10 is placed in the inner sealing groove of the rear flange 3.
The sliding seal between the sealing sleeve 15 and the front flange plate 2 is realized through a limiting gasket 6, a Stent seal 7 and a sealing ring a 8; the sliding seal between the sealing sleeve 15 and the cylinder 4 is realized through a sealing ring b 9; the sliding seal between the sealing sleeve 15 and the rear flange 3 is realized by a sealing ring c 10. The sealing ring a8, the sealing ring b9 and the sealing ring c10 are made of graphite materials, and the graphite rings have self-lubricating and high-temperature-resistant characteristics, so that the high-temperature-resistant characteristic of the invention is ensured.
The working principle is as follows:
in a free state, under the action of the spring 5, the electric nozzle end of the electric nozzle assembly 1 is positioned outside the combustion chamber; when the combustion engine needs to be ignited, high-pressure gas is introduced into the vent hole of the rear flange 3 to drive the electric nozzle assembly 1 to move towards the direction of the front flange 2, so that the end of the electric nozzle extends into a combustion chamber to ignite gas; after the combustion engine is started, the gas in the vent hole of the rear flange 3 is decompressed to the standard atmospheric pressure, and the electric nozzle assembly 1 rebounds under the action of the spring 5, namely the end of the electric nozzle retreats out of the combustion chamber.
Claims (1)
1. A retractable ignition electric nozzle is characterized in that: the electric nozzle comprises an electric nozzle component (1), a front flange plate (2), a rear flange plate (3), a cylinder (4), a spring (5), a limiting washer (6), a Stent seal (7), a sealing ring a (8), a sealing ring b (9), a sealing ring c (10), a flat washer (11), a spring washer (12), a nut (13), a stud (14) and a sealing sleeve (15); the electric nozzle assembly (1) is in threaded connection with the sealing sleeve (15) and then is fixed in the cylinder (4) through the front flange plate (2) and the rear flange plate (3); the spring (5) is positioned in the mounting grooves of the front flange plate (2) and the sealing sleeve (15), and the front flange plate (2) and the rear flange plate (3) are fastened through the stud (14), the flat washer (11), the spring washer (12) and the nut (13); the limiting gasket (6), the Stent seal (7) and the sealing ring a (8) are arranged in a sealing groove in the sealing sleeve (15); the sealing ring b (9) is arranged in an outer sealing groove of the sealing sleeve (15); the sealing ring c (10) is arranged in an inner sealing groove of the rear flange plate (3); the sliding seal between the sealing sleeve (15) and the front flange plate (2) is realized through a limiting gasket (6), a Stent seal (7) and a sealing ring a (8); the sliding seal between the sealing sleeve (15) and the cylinder (4) is realized through a sealing ring b (9); the sliding seal between the sealing sleeve (15) and the rear flange plate (3) is realized through a sealing ring c (10); the sealing ring a (8), the sealing ring b (9) and the sealing ring c (10) are made of graphite materials; in a free state, the electric nozzle end of the electric nozzle component (1) is positioned outside the combustion chamber; when ignition is needed, high-pressure gas is introduced into the vent hole of the rear flange plate (3), so that the electric nozzle assembly (1) can be driven to move towards the front flange plate (2), and the end head of the electric nozzle extends into the combustion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811327858.3A CN109339953B (en) | 2018-11-09 | 2018-11-09 | Telescopic ignition electric nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811327858.3A CN109339953B (en) | 2018-11-09 | 2018-11-09 | Telescopic ignition electric nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109339953A CN109339953A (en) | 2019-02-15 |
| CN109339953B true CN109339953B (en) | 2021-05-25 |
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ID=65314603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811327858.3A Active CN109339953B (en) | 2018-11-09 | 2018-11-09 | Telescopic ignition electric nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109339953B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792515B (en) * | 2019-11-08 | 2022-05-06 | 陕西航空电气有限责任公司 | Ignition electric nozzle of high-thrust engine |
| CN110905663B (en) * | 2019-12-05 | 2021-02-19 | 中国航发四川燃气涡轮研究院 | Ignition device through long-range pneumatic control |
| CN112697352B (en) * | 2020-12-16 | 2023-07-07 | 陕西航空电气有限责任公司 | Ignition electric nozzle air tightness detection device and method |
| CN114352455A (en) * | 2021-12-20 | 2022-04-15 | 中国北方发动机研究所(天津) | Combustion chamber ignition device for supercharger test |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4275559A (en) * | 1979-08-31 | 1981-06-30 | General Electric Company | Retractable igniter device for gas turbines |
| JPH0417133U (en) * | 1990-06-04 | 1992-02-13 | ||
| CN201310921Y (en) * | 2008-11-20 | 2009-09-16 | 上海齐耀动力技术有限公司 | Igniter |
| CN103968416A (en) * | 2013-02-04 | 2014-08-06 | 气体产品与化学公司 | Retractable ignition system |
| CN105134385A (en) * | 2015-09-17 | 2015-12-09 | 中国航空工业集团公司沈阳发动机设计研究所 | Expansion-type ignition electric nozzle assembly |
-
2018
- 2018-11-09 CN CN201811327858.3A patent/CN109339953B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4275559A (en) * | 1979-08-31 | 1981-06-30 | General Electric Company | Retractable igniter device for gas turbines |
| JPH0417133U (en) * | 1990-06-04 | 1992-02-13 | ||
| CN201310921Y (en) * | 2008-11-20 | 2009-09-16 | 上海齐耀动力技术有限公司 | Igniter |
| CN103968416A (en) * | 2013-02-04 | 2014-08-06 | 气体产品与化学公司 | Retractable ignition system |
| CN105134385A (en) * | 2015-09-17 | 2015-12-09 | 中国航空工业集团公司沈阳发动机设计研究所 | Expansion-type ignition electric nozzle assembly |
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| Publication number | Publication date |
|---|---|
| CN109339953A (en) | 2019-02-15 |
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