CN102980209B - Plasma catalysis ignition integrated nozzle - Google Patents
Plasma catalysis ignition integrated nozzle Download PDFInfo
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- CN102980209B CN102980209B CN201210487871.1A CN201210487871A CN102980209B CN 102980209 B CN102980209 B CN 102980209B CN 201210487871 A CN201210487871 A CN 201210487871A CN 102980209 B CN102980209 B CN 102980209B
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Abstract
The invention provides a plasma catalysis ignition integrated nozzle which is a plasma assisted atomization and plasma ignition integrated nozzle formed by a low-temperature plasma discharge assembly, a fuel pressure atomization nozzle assembly and a high-energy plasma ignition assembly. A barrier medium uniformly discharges to ensure that a liquid fuel partially pyrolyzes to generate a large quantity of gas activated components, so that a gas-liquid coexisting plasma microcell is formed, fuel activation energy and ignition energy are reduced, physical conditions of gas assisted atomization are formed, and atomization effect is improved. A plasma ignitor is arranged on the middle of a multi-point nozzle and is positioned in a combustion chamber low-pressure region, plasma and fuel atomized particles are well mixed to generate a chemical reaction, and a stable high-temperature ignition core is easily formed. Ignition is directly carried out by adopting a plasma jet, and because the plasma jet has special discharge characteristics and larger discharge energy and is highly concentrated in energy, the ignition reliability and the ignition concentration limit of a gas turbine are greatly improved. The plasma catalysis ignition integrated nozzle can be applied to a combustion chamber of the gas turbine.
Description
Technical field
What the present invention relates to is a kind of nozzle that can be applicable to gas-turbine combustion chamber.
Background technology
Plasma Firing Technology is just being widely used in all conglomeraties such as aircraft industry, shipbuilding industry and generating, oil and gas transmission etc. as a kind of novel firing technique.And plasma igniter is as a kind of Novel ignition equipment of modern gas turbines, there is unique flash-over characteristic and larger discharge energy, concentration of energy, and igniting reliability and the igniting concentration limit of engine can be made.When injecting fuel and high temperature air plasma jet in plasma igniter, conduct heat under fuel-rich state, complexity also occurs mass transfer and violent series of physical chemical reaction, it is with the Pintsch process of gas and fuel and restructuring, include complicated pilot process, and the speed of each reaction is not quite similar, and therefore course of reaction is quite complicated.
Dielectric barrier discharge (DBD) under atmospheric pressure can produce the low temperature plasma of large volume, high-energy-density, do not need vacuum equipment just can in room temperature or close to the active particle obtained under room temperature condition needed for chemical reaction, low-temperature plasma catalysis is carried out to fuel, be the extremely effective approach of one of chemical reaction process low energy consumption, high yield, high selectivity, be widely used in the aspects such as ozone generation and hydrogen manufacturing.
Application number is in the patent document of US20050596453, disclose the fuel injection device of a kind of integrated atomizer and electric spark igniter one, comprise electrode pair igniter and fuel injector, two pairs of ignitors are distributed in around atomizer, and the fuel lighting injector forms initial torch and directly enters combustion chamber.
Application number is in the patent document of 201010148590.4, disclose a kind of plasma ignition nozzle of coal dust gasifier of improvement, be connected with plasma generator, comprise outer sleeve, be outwards disposed with central tube first-stage firing chamber and inner sleeve secondary combustion chamber from outer sleeve center.This multistep ignition mode, be convenient to install, effect stability is reliable, can extensively apply in the gasification furnace of various fine coal charging, and structure is simple, and cost is low, handling safety.
Application number is in the patent document of 200810189860.9, disclose a kind of premixing pre-vortex plasma assistant lighter, comprise cyclone device, plasma generator, igniter is configured to be inserted into poor fuel premixed based in the socket space of the existing blank in the centerbody of ground type gas turbine burner fuel nozzle or liquid fuel.
Application number is in the patent document of 99121137.5, disclose a kind of electrically controlled nozzle for plasma ignition of gas fuel, electromagnetic propulsion as gaseous fuel cylinder inner high voltage air feed and plasma igniter forces the integrated spray nozzle of burning, have that structure is simple, the life-span be long, gaseous fuel flow area is large, the advantage of fast response time, functional reliability is high.
Summary of the invention
The object of the present invention is to provide a kind of plasma catalytic ignition integrated nozzle that the igniting reliability of gas turbine and the concentration limit of igniting can be made to be improved.
The object of the present invention is achieved like this:
Comprise primarily of igniting negative electrode, be positioned at the anode outside igniting negative electrode, the high energy plasma igniting assembly that the igniting pottery between igniting negative electrode and positive electrode and priming supply collar nut are formed; Also comprise the oil pressure atomizing nozzle assembly formed primarily of base and swirl injection assembly, described swirl injection assembly comprises eddy flow part, is positioned at the eddy flow lid above eddy flow part, the spring being positioned at the eddy flow side of covering and friction top, and eddy flow part, eddy flow lid and spring are installed in base by friction top; Described base is annular, and multiple described swirl injection assembly is uniformly distributed in annular base; Described high energy plasma igniting assembly is arranged in annular base, anode has air conducting hole, is struck up partnership between base and anode by top cap; With oil inlet pipe on annular base, oil inlet pipe is connected with cold plasma discharge assembly, and described cold plasma discharge assembly comprises housing, be positioned at the catalytic cathode in the middle of housing, be enclosed within the catalytic ceramics outside catalytic cathode, and catalysis power connection nut, the side of housing is provided with fuel filler.
The present invention can also comprise:
1, fuel filler place arranges fuel oil filter.
2, the quantity of described swirl injection assembly is 6-12.
The present invention proposes the integrated spray nozzle of the atomization of a kind of plasma asistance and plasma ignition perfect adaptation, utilize block media Uniform Discharge, make the cracking of liquid fuel part, produce a large amount of gas activation component, form gas-liquid to coexist plasma micelle, adopt plasma jet direct-fire, because it possesses unique flash-over characteristic and larger discharge energy, and energy height is concentrated; Adopt multichannel pressure atomized fog jet, realize multi-point injection, strengthen the blending of fuel and air, the igniting reliability of gas turbine and the concentration limit of igniting are greatly improved.
Technical characterstic of the present invention is mainly reflected in:
(1) the present invention mainly comprises cold plasma discharge assembly, oil pressure atomizing nozzle assembly and high energy plasma igniting assembly.First liquid towards fuel carries out plasma catalytic, the fuel fragment produce catalysis and activating component send into combustion chamber by multipoint pressure swirl nozzle, then the huge discharge energy of plasma jet is utilized to light a fire to it, realize the better drop-size distribution characteristic of liquid fuel spraying, reduce activation energy, improve igniting and the stability of burning.
(2) the present invention utilizes pottery as the block media of cold plasma discharge, ensures that diesel oil can discharge at region of discharge; Due to the inherent characteristic of ceramic material, can effectively prevent from discharging too fierce and situation that is that puncture block media occurs, improve the service life of cold plasma discharge assembly; Block media is designed to top closure pattern, and interior electrode is in wherein, through verification experimental verification, can effectively avoid end arc discharge, ensures Uniform discharge and the stability of region of discharge, thus improves efficiency and the uniformity of liquid fuel catalysis.
(3) plasma igniter is coupling in the middle of multiple spot nozzle by the present invention, and igniter is arranged in head of combustion chamber recirculating zone, overcome the free fiery core of conventional ignition device blown down in high velocity air or be blown the shortcoming of recirculating zone, high-temperature plasma stream is effectively mixed with fuel, be more prone to form igniting core, ensure igniting reliability.On the other hand, after igniting terminates, plasma igniter quits work, but still produces air-spray, not only plays the effect of cooling point firearm, also strengthens the blending of fuel and air, prevents nozzle deposit carbon, reduces discharge, improves efficiency of combustion.
(4) the present invention adopts 8 single channel pressure atomized fog jets, realizes multi-point injection, strengthens the blending of fuel and air, adapts to different combustion chambers operating mode.Each nozzle all adopts support spring to achieve being rigidly connected between support and eddy flow part, the phenomenons such as the eddy flow part that may occur when avoiding shell body to loosen is crooked, flow in fuel produces liquid in rotation through tangential hole eddy flow part, the hollow diffusion taper oil film of ejection is accelerated in convergent passage, utilize the poor and broken atomization of the high speed of liquid and outside air, ensure good atomizing effect.
Accompanying drawing explanation
Accompanying drawing is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing citing, the present invention is described in more detail.
The structure composition of plasma catalytic ignition integrated nozzle of the present invention comprises catalysis nut, catalytic ceramics 2, pad, catalytic cathode 4, fuel oil filter 5, housing 6, priming supply collar nut 7, igniting pottery 8, pad 9, hold-down ring 10, igniting negative electrode 11, anode 12, upper cover 13, base 14, friction top 15, spring 16, eddy flow lid 17 and eddy flow part 18.
Igniting negative electrode 11, is positioned at the anode 12 outside igniting negative electrode, the high energy plasma igniting assembly that the igniting pottery 8 between igniting negative electrode and positive electrode and priming supply collar nut 7 are formed.Arrange hold-down ring 10 between anode and igniting pottery, form certain interval between anode and igniting pottery, hold-down ring arranges pad 9 with the contact position of igniting pottery.
Oil pressure atomizing nozzle assembly is formed by base 14 and swirl injection assembly, described swirl injection assembly comprises eddy flow part 18, is positioned at the eddy flow lid 17 above eddy flow part, the spring 16 being positioned at the eddy flow side of covering and friction top 15, and eddy flow part, eddy flow lid and spring are installed in base by friction top.
Base is annular, and 8 described swirl injection assemblies are uniformly distributed in annular base.High energy plasma igniting assembly is arranged in annular base, anode has air conducting hole, is struck up partnership between base and anode by top cap.
With oil inlet pipe on annular base, oil inlet pipe is connected with cold plasma discharge assembly.Described cold plasma discharge assembly comprises housing 6, is positioned at the catalytic cathode 4 in the middle of housing, is enclosed within the catalytic ceramics 2 outside catalytic cathode, and catalysis power connection nut 1.The contact position of catalytic ceramics and housing arranges pad 3.The side of housing is provided with fuel filler, and fuel filler place arranges fuel filter, and 5.
Each parts all adopt and are threaded, and pottery and negative electrode are separately fixed at low-temperature plasma catalysis and plasma igniter anode by nut 1 and nut 7, can effectively avoid end arc discharge, ensure Uniform discharge and the stability of region of discharge.Fuel system by entering atomizer cracking space after fuel oil filter 5, i.e. the annular gaps that formed with pottery 2 of housing 6.In cracking space, ceramic dielectric barrier discharge technology is utilized to carry out partially catalyzed cracking to fuel oil, produce a large amount of gas activation component (as H, OH ion), form gas-liquid to coexist plasma micelle, reduce fuel activating energy and ignition energy, form the physical condition of gas assisted atomization, improve atomizing effect.Under higher inlet pressure, pyrolysis product enters 8 pressure swirl nozzle interior very soon, produces liquid in rotation through tangential hole eddy flow part 18, accelerates ejection and forms multiple spot hollow diffusion taper oil film, ensure good atomizing effect in convergent passage.
Now open plasma igniter power supply, by negative electrode 11 and anode 12 electrion, air is through thermal ionization, create gas flow of ions, the chemical bond of molecule is originally interrupted, form active very strong ion, be sent under the effect of ion current cooling-air stream in plasma igniter in the middle of multiple spot nozzle, i.e. combustion chamber blending low-pressure area, chemical reaction is produced with the fuel in low-temperature plasma catalytic module, under the acting in conjunction of catalytic active component and plasma jet, make to have and light formation lighting-off torch compared with the fuel element of low-activation energy, namely formed stable " high-temperature ignition core ".Then rely on this high temperature generated, high pressure and containing the torch of anakmetomeres, then remove the main fuel torch lighting whole combustion chamber, when the main fuel torch of combustion chamber can be continuous and stable burning after, ignition process terminates at this point, and ignition installation quits work immediately.
By the acting in conjunction of plasma ignition and catalytic pyrolysis assembly, the service behaviour of gas turbine under low operating mode can be made to be greatly improved and to improve, the efficiency of combustion of fuel during igniting operating mode is improved, oil consumption rate is reduced, content of carbon black is declined, reduces the quantity of active carcinogenic substance polycyclic aromatic hydrocarbons (PAH) hydrocarbon.
Claims (2)
1. a plasma catalytic ignition integrated nozzle, comprises primarily of igniting negative electrode, is positioned at the anode outside igniting negative electrode, the high energy plasma igniting assembly that the igniting pottery between igniting negative electrode and positive electrode and priming supply collar nut are formed; Also comprise the oil pressure atomizing nozzle assembly formed primarily of base and swirl injection assembly, described swirl injection assembly comprises eddy flow part, is positioned at the eddy flow lid above eddy flow part, the spring being positioned at the eddy flow side of covering and friction top, and eddy flow part, eddy flow lid and spring are installed in base by friction top; It is characterized in that: described base is annular, and 8 described swirl injection assemblies are uniformly distributed in annular base; Described high energy plasma igniting assembly is arranged in annular base, anode has air conducting hole, is struck up partnership between base and anode by top cap; With oil inlet pipe on annular base, oil inlet pipe is connected with cold plasma discharge assembly, and described cold plasma discharge assembly comprises housing, be positioned at the catalytic cathode in the middle of housing, be enclosed within the catalytic ceramics outside catalytic cathode, and catalysis power connection nut, the side of housing is provided with fuel filler.
2. plasma catalytic ignition integrated nozzle according to claim 1, is characterized in that: fuel filler place arranges fuel oil filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210487871.1A CN102980209B (en) | 2012-11-27 | 2012-11-27 | Plasma catalysis ignition integrated nozzle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210487871.1A CN102980209B (en) | 2012-11-27 | 2012-11-27 | Plasma catalysis ignition integrated nozzle |
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| CN102980209A CN102980209A (en) | 2013-03-20 |
| CN102980209B true CN102980209B (en) | 2015-02-25 |
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| CN201210487871.1A Expired - Fee Related CN102980209B (en) | 2012-11-27 | 2012-11-27 | Plasma catalysis ignition integrated nozzle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723578A (en) * | 2018-12-21 | 2019-05-07 | 中国人民解放军空军工程大学 | A kind of edge distribution plasma pyrolysis activation recharging oil device and method |
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| CN103900106B (en) * | 2014-03-11 | 2015-08-12 | 哈尔滨工程大学 | A kind of dual fuel nozzle of plasma-catalytic fuel gas |
| CN104747321B (en) * | 2015-01-19 | 2017-01-25 | 西安航天动力研究所 | High back pressure plasma igniter high pressure trigger |
| CN105020743B (en) * | 2015-07-15 | 2017-10-03 | 哈尔滨工程大学 | A kind of fuel autoxidation cracks axially staged combustion chamber |
| CN109057972B (en) * | 2018-07-24 | 2019-08-02 | 中国人民解放军空军工程大学 | A kind of preheating type aero-engine plasma igniter |
| CN109113873B (en) * | 2018-10-26 | 2019-09-13 | 大连民族大学 | A kind of igniter working method with double air inlet bias Double-positive-pole structures |
| CN109967460B (en) * | 2019-04-01 | 2020-07-07 | 中国人民解放军战略支援部队航天工程大学 | Engine nozzle carbon deposition removing method based on low-temperature plasma |
| CN110440291B (en) * | 2019-08-01 | 2020-06-30 | 沈阳航空航天大学 | Plasma fuel atomizing nozzle adopting dual-mode excitation and control method |
| CN113982759A (en) * | 2021-10-18 | 2022-01-28 | 中国航发沈阳黎明航空发动机有限责任公司 | Oil supply ignition device capable of working independently and designed in integrated mode |
| CN115789701B (en) * | 2023-02-06 | 2023-06-02 | 中国人民解放军战略支援部队航天工程大学 | Discharge plasma enhanced blending nozzle |
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| CN2883947Y (en) * | 2006-01-06 | 2007-03-28 | 哈尔滨工程大学 | Pulse plasma ignitor |
| CN201134973Y (en) * | 2007-08-01 | 2008-10-15 | 烟台龙源电力技术股份有限公司 | Anodic stent and plasma generator |
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| CN102721081A (en) * | 2012-06-26 | 2012-10-10 | 哈尔滨工程大学 | Nozzle for enhancing atomization by plasma |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102519056A (en) * | 2011-12-26 | 2012-06-27 | 南京航空航天大学 | Small-size precombustion chamber for engine |
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- 2012-11-27 CN CN201210487871.1A patent/CN102980209B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| US5590517A (en) * | 1993-05-26 | 1997-01-07 | Simmonds Precision Engine Systems, Inc. | Ignition methods and apparatus for combustors |
| US6215091B1 (en) * | 1998-06-03 | 2001-04-10 | Korea Accelerator And Plasma Research Association | Plasma torch |
| CN2883947Y (en) * | 2006-01-06 | 2007-03-28 | 哈尔滨工程大学 | Pulse plasma ignitor |
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| CN101463764A (en) * | 2009-01-09 | 2009-06-24 | 哈尔滨工程大学 | High-energy plasma igniter of gas turbine |
| CN102678339A (en) * | 2012-05-29 | 2012-09-19 | 哈尔滨工程大学 | Plasma igniter with reusable cathode |
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| CN109723578A (en) * | 2018-12-21 | 2019-05-07 | 中国人民解放军空军工程大学 | A kind of edge distribution plasma pyrolysis activation recharging oil device and method |
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| CN102980209A (en) | 2013-03-20 |
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Effective date of registration: 20201202 Address after: Area A129, 4th floor, building 4, Baitai Industrial Park, Yazhou Bay science and Technology City, Yazhou District, Sanya City, Hainan Province, 572024 Patentee after: Nanhai innovation and development base of Sanya Harbin Engineering University Address before: 150001 Heilongjiang, Nangang District, Nantong street,, Harbin Engineering University, Department of Intellectual Property Office Patentee before: HARBIN ENGINEERING University |
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