CN102175041B - Dividing wall type regenerative cooling air oxygen alcohol torch type igniter - Google Patents
Dividing wall type regenerative cooling air oxygen alcohol torch type igniter Download PDFInfo
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- CN102175041B CN102175041B CN2010106036193A CN201010603619A CN102175041B CN 102175041 B CN102175041 B CN 102175041B CN 2010106036193 A CN2010106036193 A CN 2010106036193A CN 201010603619 A CN201010603619 A CN 201010603619A CN 102175041 B CN102175041 B CN 102175041B
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Abstract
The invention discloses a dividing wall type regenerative cooling air oxygen alcohol torch type igniter which comprises an oxidant shell, a middle bottom, an inner bottom, a cooling jacket, a combustion chamber, a nozzle, a sparking plug, an oxidant inlet pipe mouth and a fuel inlet pipe mouth, wherein oxygen and alcohol are adopted as a propellent, and ignition is carried out by adopting the electric sparking plug. The nozzle comprises a straight-flow nozzle and an eccentric type nozzle, the straight-flow nozzle is an oxidant nozzle, the eccentric nozzle is a fuel nozzle, a cavity from the outlet of the straight-flow nozzle to the outlet of the eccentric nozzle is a reducing chamber; oxidant enters the reducing chamber from the straight-flow nozzle, fuel enters a fuel before-spraying liquid collecting cavity through a regenerating cooling chamber and then rotates through eccentric nozzle tangential holes and enters the reducing chamber, and the oxidant and the fuel are atomized and mixed in the reducing chamber and stably combusted at the outlets of the nozzles. High-temperature fuel is uniformly mixed in the combustion chamber and then sprayed through the throat part of the combustion chamber to form a stable torch. The invention ensures ignition and cooling reliability of an igniter and stable combustion of the torch at the outlet.
Description
Technical field
The present invention relates to a kind of torch igniter; Specifically be a kind of dividing wall type regeneration cooling torch igniter that uses oxygen and alcohol as propellant, can be applicable to igniting and the nonhypergolic propellant liquid-propellant rocket engine thrust chamber of ground burner, the ignition process of generator.
Background technology
Using comparatively widely at present, igniter mainly contains cartridge, electric spark igniter, resonant mode igniter and spontaneous combustion torch igniter.The reliability of cartridge and hypergolic igniter is higher, but the reusability of the two is relatively poor, must load again after the each use of cartridge, and be easy to generate residue after the solid gunpowder burning, and the operation and maintenance process is extremely inconvenient.The propellant that hypergolic igniter uses is liquid state, does not generally have the problem of combustion residue, but the hypergolic propellants combination overwhelming majority has toxicity, like nitric acid and triethanolamine.This is comparatively inconvenience for the igniter that is repeatedly used.It is simple, convenient, workable that electric spark igniter uses, and for the ground experiment system, have very big advantage, but this igniter ignition energy is less, is mainly used in the propellant combination igniting of less gas/gas of mass flow or gas/liquid form.Resonant mode igniter Recent study is more, but as a kind of emerging igniter, its key technology is still waiting further research.
Along with the development and progress of technology, higher requirement is proposed igniter.Will guarantee that not only propellant and combustion product are nontoxic, pollution-free, ignition energy is sufficient, and the igniting reliability is high; It is convenient also will to satisfy working service, the strong demand of reusable property.Domestic present high thrust liquid-propellant rocket engine such as oxygen kerosene engine use the mixture of triethyl aluminum and boron triethyl as igniting agent, because this igniting agent chance oxygen will spontaneous combustion, so its working service is more loaded down with trivial details, and security is lower.The liquid oxygen hydrogen engine adopts the pyrophoric ignition device at present, and not only there is the problem of combustion residue in cartridge, will satisfy the repeatedly igniting of engine simultaneously a plurality of cartridges must be installed.And cartridge, spontaneous combustion torch igniter (propellant is poisonous) etc. are often adopted in the igniting of the big flow burner in ground, and this has brought adverse effect for the repeated use and the maintenance of ground installation.
In sum, domestic igniter at present commonly used all in various degree existence uses limitation, can't satisfy the igniting demand of various burners.Guarantee requirements such as igniting is reliable, nontoxic pollution-free, ignition energy is sufficient, working service is convenient, need the novel igniter of research.
Summary of the invention
The object of the invention provides a kind of dividing wall type regeneration cold gas oxygen alcohol torch igniter, and it has solved existing igniter poor reliability, ignition energy is low, working service is inconvenient technical problem.
The advantage that the present invention had:
A kind of dividing wall type regeneration cold gas oxygen alcohol torch igniter, its special character is: comprise oxidant assembly, fuel assembly, the middle end 2, the interior end 3, spark plug 16, nozzle assembly 10 and combustion chamber 5; Said oxidant assembly comprises oxidant housing 1, the oxidant inlet ozzle 8 that communicates with oxidant housing 1, and said oxidant housing 1 constitutes oxidant cavity with the middle end 2; Said fuel assembly comprises and wraps in the outer cooling jacket 4 in combustion chamber 5, is arranged on the fuel inlet ozzle 9 on the cooling jacket; The other end at the end 2 and the interior end 3, constitute the preceding liquid collecting cavity 15 of fuel spray in said; Said combustion chamber 5 constitutes regenerative cooling channels 6 with cooling jacket 4, and said fuel inlet ozzle 9 is near the throat 7 of combustion chamber; Place, the ends 3 in said spark plug 16 is arranged on; Said nozzle assembly 10 is fixed at middle the end 2; It comprises smooth-bore tip 18, wraps in the rotarytype injector 11 in the outside of smooth-bore tip 18; One end of said smooth-bore tip communicates with oxidant housing 1 through direct current hole 12; The other end is opened in the rotarytype injector 11, and an end of said rotarytype injector communicates with the preceding liquid collecting cavity 15 of fuel spray through a plurality of tangential spray orifices 17 that are arranged on the sidewall, and the other end is opened on the interior end 3; Form indentation chamber 13 between the opening of the open end of said smooth-bore tip and rotarytype injector 11, form eddy flow chamber 20 between the lateral surface of said smooth-bore tip and the medial surface of rotarytype injector.
The center at the end 3 in the rotarytype injector of said nozzle assembly 10 is opened on.
The present invention's beneficial effect compared with prior art is:
1, torch igniter of the present invention has adopted dividing wall type regeneration cooling structure form; Cooling jacket and combustion chamber form regenerative cooling channels; Fuel passes through alcohol inlet ozzle and gets into regenerative cooling channels, gets into the preceding liquid collecting cavity of fuel spray after the combustion chamber is cooled off, and can adapt to the erosion of high-temperature fuel gas in the combustion chamber; When satisfying the igniting demand of big flow burner, guaranteed igniter self cooling reliability effectively.
2, torch igniter of the present invention adopts the coaxial DC rotarytype injector, through selecting suitable nozzle length and indentation length, has effectively realized gas-liquid blending, has improved igniter self igniting reliability, has suppressed the generation of combustion instability simultaneously.
3, torch igniter of the present invention adopts dividing wall type regeneration cooling structure, has avoided labyrinths such as traditional corrugated plating, groove milling, has reduced difficulty of processing.
4, torch igniter of the present invention is simple in structure, and intensity is reliable, and working service is convenient, possesses the repeated use ability.
5, the propellant of torch igniter of the present invention and combustion product are nontoxic, pollution-free, and working service is convenient.
Description of drawings
The structural representation of Fig. 1 torch igniter of the present invention;
The structural representation of the coaxial DC rotarytype injector that Fig. 2 the present invention adopts;
Wherein: 1-oxidant housing, the end among the 2-, the end in the 3-, 4-cooling jacket, 5-combustion chamber; The 6-regenerative cooling channels, 7-throat, 8-oxidant inlet ozzle, 9-fuel inlet ozzle, 10-nozzle assembly; The 11-rotarytype injector, 12-direct current hole, 13-indentation chamber, liquid collecting cavity before the spray of 15-fuel; The 16-spark plug, 17-tangential spray orifice, 18-smooth-bore tip, 20-eddy flow chamber.
The specific embodiment
Dividing wall type regeneration cold gas oxygen alcohol torch igniter of the present invention comprises oxidant assembly, fuel assembly, the middle end 2, spark plug 16, nozzle assembly 10 and combustion chamber 5; The oxidant assembly comprises oxidant housing 1, the oxidant inlet ozzle 8 that communicates with oxidant housing 1, and oxidant housing 1 constitutes oxidant cavity with the middle end 2; Fuel assembly comprises and wraps in the outer cooling jacket 4 in combustion chamber 5, is arranged on the fuel inlet ozzle 9 on the cooling jacket, and the other end at the middle end 2 and the interior end constitute liquid collecting cavity 15 before the fuel spray.Oxidant housing 1 constitutes oxidant cavity with the middle ends 2 welding; Oxidant inlet ozzle and fuel inlet ozzle are welded on respectively on oxidant housing and the cooling jacket, form the inlet of propellant.Reliable cooling for the guarantee point firearm has designed cooling jacket.The gap that forms between cooling jacket and the combustion chamber constitutes regenerative cooling channels 6, and the clearance control between cooling jacket and the combustion chamber can improve the flow velocity of fuel in regenerative cooling channels effectively at 1mm, improves the regeneration cooling effect.Fuel inlet ozzle 9 is near the throat 7 of combustion chamber; Place, the ends 3 in spark plug 16 is arranged on; The middle end, the interior end, nozzle and the integral braze-welded formation head of spark plug pressure inlet, welding connection structure is taked in head and combustion chamber, satisfies a body bonding strength and air-tightness requirement.Nozzle assembly 10 is fixed at middle the end 2; It comprises smooth-bore tip 18, wraps in the rotarytype injector 11 in the outside of smooth-bore tip 18; The welding of smooth-bore tip and rotarytype injector, and between the opening of the open end of smooth-bore tip and rotarytype injector 11 formation indentation chamber 13.The indentation length that smooth-bore tip of the present invention and rotarytype injector form confirms that according to test nozzle indentation length shown in Figure 2 is elected 6mm as.One end of smooth-bore tip communicates with oxidant housing 1 through direct current hole 12; The other end is opened in the rotarytype injector 11; One end of rotarytype injector communicates with the preceding liquid collecting cavity 15 of fuel spray through a plurality of tangential spray orifices 17 that are arranged on the sidewall, and the other end is opened on the interior end; Form eddy flow chamber 20 between the lateral surface of smooth-bore tip and the medial surface of rotarytype injector.In order to make combustion gas more even, also in order to reduce the damage of combustion chamber inwall, the center at the end 3 in the rotarytype injector of nozzle assembly 10 preferably is opened on.
The principle of the invention is: direct current rotarytype injector of torch igniter header arrangement, and an electric plug is installed.Oxygen gets into oxidant cavity by the oxidant inlet ozzle and gets into the combustion chamber through smooth-bore tip; The flow velocity of oxidant in the direct current hole is not more than 0.3 Mach; Alcohol gets into the preceding liquid collecting cavity of fuel spray by the fuel inlet ozzle through regenerative cooling channels; Cross the spin chamber and get into the indentation chamber through the adherent rotating tee of tangential hole on the rotarytype injector again, alcohol atomizes, evaporates indoor beginning of indentation, and carries out getting into the combustion chamber after the blending with oxygen.The mixture of oxygen and alcohol is ignited in the electric plug energising sparking discharge that is installed in the spark plug pressure inlet; The high-temperature fuel gas that produces is set up constant pressure in the combustion chamber after the blending of combustion chamber; Forming stable torch entering through throat needs in the main burner of igniting, for burner provides sufficient ignition energy.
The material of each part of torch igniter of the present invention all adopts stainless steel, and each is zero, Welding Structure is all adopted in the connection of parts, has effectively guaranteed air-tightness and bonding strength.In order to reduce the loading time of the preceding liquid collecting cavity of fuel spray, the cooling reliability at the end in improving needs the distance at the interior end of control and the middle end.This structure helps reducing fuel spray ante-chamber volume, and improves the alcohol flow velocity in the fuel spray ante-chamber, improves the heat exchange effect.
Torch igniter of the present invention is through the examination of heat run repeatedly, and functional reliability and the working service that torch igniter has been verified in the test run examination be characteristics easily.The torch igniter cooling performance is good, and is intact through the igniter examination back inspection structure of repeatedly heat run.
Claims (2)
1. dividing wall type regeneration cold gas oxygen alcohol torch igniter is characterized in that: comprise oxidant assembly, fuel assembly, the middle end (2), the interior end (3), spark plug (16), nozzle assembly (10) and combustion chamber (5); Said oxidant assembly comprises oxidant housing (1), the oxidant inlet ozzle (8) that communicates with oxidant housing (1), and said oxidant housing (1) constitutes oxidant cavity with the middle end (2); Said fuel assembly comprises and wraps in the outer cooling jacket (4) in combustion chamber (5), is arranged on the fuel inlet ozzle (9) on the cooling jacket; The other end at the end (2) and the interior end (3) constitute the preceding liquid collecting cavity (15) of fuel spray in said; Said combustion chamber (5) and cooling jacket (4) constitute regenerative cooling channels (6), and said fuel inlet ozzle (9) is near the throat (7) of combustion chamber; Said spark plug (16) is arranged on the interior end (3) and locates; Said nozzle assembly (10) is fixed at the middle end (2); It comprises smooth-bore tip (18), wraps in the rotarytype injector (11) in the outside of smooth-bore tip (18); One end of said smooth-bore tip communicates with oxidant cavity through direct current hole (12); The other end is opened in the rotarytype injector (11), and an end of said rotarytype injector communicates with the preceding liquid collecting cavity (15) of fuel spray through a plurality of tangential spray orifices (17) that are arranged on the sidewall, and the other end is opened on the interior end (3); Form indentation chamber (13) between the opening of the open end of said smooth-bore tip and rotarytype injector (11), form eddy flow chamber (20) between the lateral surface of said smooth-bore tip and the medial surface of rotarytype injector.
2. dividing wall type regeneration cold gas oxygen alcohol torch igniter according to claim 1, it is characterized in that: the rotarytype injector of said nozzle assembly (10) is opened on the center of the interior end (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106036193A CN102175041B (en) | 2010-12-23 | 2010-12-23 | Dividing wall type regenerative cooling air oxygen alcohol torch type igniter |
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| CN2010106036193A CN102175041B (en) | 2010-12-23 | 2010-12-23 | Dividing wall type regenerative cooling air oxygen alcohol torch type igniter |
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| CN102175041A CN102175041A (en) | 2011-09-07 |
| CN102175041B true CN102175041B (en) | 2012-06-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016363A (en) * | 2016-05-17 | 2016-10-12 | 中国人民解放军63820部队吸气式高超声速技术研究中心 | Igniter |
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| RU2739851C2 (en) * | 2016-07-19 | 2020-12-29 | Аэроджет Рокетдайн, Инк. | Rocket engine nozzle element |
| CN108915898A (en) * | 2018-07-11 | 2018-11-30 | 苏州频聿精密机械有限公司 | A kind of rocket engine reducing fuel consumption |
| CN109386400B (en) * | 2018-12-07 | 2021-01-12 | 上海空间推进研究所 | Laser torch igniter for liquid oxygen/methane engine |
| CN109653903A (en) * | 2019-02-20 | 2019-04-19 | 中国科学院力学研究所 | A kind of repeatable igniter for solid-liquid rocket |
| CN110925094B (en) * | 2019-11-28 | 2021-10-22 | 四川泛华航空仪表电器有限公司 | Cooling structure of ignition device |
| CN115289497A (en) * | 2022-09-22 | 2022-11-04 | 中国空气动力研究与发展中心空天技术研究所 | Pneumatic resonance ignition device for combustion heater |
| CN116164307B (en) * | 2023-03-09 | 2024-04-19 | 中国空气动力研究与发展中心空天技术研究所 | Gas spiral-flow type air-hydrogen torch igniter |
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| US2865174A (en) * | 1956-05-16 | 1958-12-23 | United Aircraft Corp | Screech reduction in combustion chambers |
| US4078377A (en) * | 1974-01-28 | 1978-03-14 | Ford Motor Company | Internally vaporizing low emission combustor |
| CN1056563A (en) * | 1990-05-03 | 1991-11-27 | 通用电气公司 | The transpiration cooled throat section of low NOx combustor and relevant technological method |
| US5309710A (en) * | 1992-11-20 | 1994-05-10 | General Electric Company | Gas turbine combustor having poppet valves for air distribution control |
| GB2405197A (en) * | 2003-08-16 | 2005-02-23 | Rolls Royce Plc | A variable geometry premixing fuel injector |
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2010
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Patent Citations (5)
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|---|---|---|---|---|
| US2865174A (en) * | 1956-05-16 | 1958-12-23 | United Aircraft Corp | Screech reduction in combustion chambers |
| US4078377A (en) * | 1974-01-28 | 1978-03-14 | Ford Motor Company | Internally vaporizing low emission combustor |
| CN1056563A (en) * | 1990-05-03 | 1991-11-27 | 通用电气公司 | The transpiration cooled throat section of low NOx combustor and relevant technological method |
| US5309710A (en) * | 1992-11-20 | 1994-05-10 | General Electric Company | Gas turbine combustor having poppet valves for air distribution control |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106016363A (en) * | 2016-05-17 | 2016-10-12 | 中国人民解放军63820部队吸气式高超声速技术研究中心 | Igniter |
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| CN102175041A (en) | 2011-09-07 |
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