CN109059044A - A kind of supporting plate spray burner and ignition method being provided with pulse firing source - Google Patents
A kind of supporting plate spray burner and ignition method being provided with pulse firing source Download PDFInfo
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- CN109059044A CN109059044A CN201810772198.3A CN201810772198A CN109059044A CN 109059044 A CN109059044 A CN 109059044A CN 201810772198 A CN201810772198 A CN 201810772198A CN 109059044 A CN109059044 A CN 109059044A
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- China
- Prior art keywords
- supporting plate
- ignitor
- source
- spray burner
- plate ontology
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The present invention relates to belong to scramjet engine propellant spray and flame stabilization technology and burning tissues technical field, disclose a kind of supporting plate spray burner and ignition method for being provided with pulse firing source, wherein supporting plate spray burner includes the fixed panel of supporting plate, the fixed panel of the supporting plate is equipped with supporting plate ontology, the tail portion of the supporting plate ontology is trailing edge cross structure, the tail portion of the supporting plate ontology is respectively equipped with array ignitor and multiple fuel jet orifices, and the array ignitor is electrically connected with high-voltage pulse power source.The present invention can be realized the uninterrupted igniting to fuel, serve as continuity point fire source, and high-voltage pulse power source carries out active control to electric discharge, induces the incendiary source continuous-stable of generation, it is not easy to which the air draught pulsed is put out, and ensure that flame linking and stable function.
Description
Technical field
The invention belongs to scramjet engine propellant sprays and flame stabilization technology and burning tissues technical field, specifically
Ground is related to a kind of supporting plate spray burner and ignition method for being provided with pulse firing source.
Background technique
Scramjet engine structure is simple, generally by the key components group such as air intake duct, distance piece, combustion chamber and jet pipe
At, and heart of the combustion chamber as engine, the even more emphasis of its research.Burn it is indoor burning be in supersonic flow into
Capable, since chamber length is short, this allows for fuel, and residence time is very short in the combustion chamber, only Millisecond, is difficult
Realize fuel fight stablize burning.In order to obtain higher efficiency of combustion in the combustion chamber of finite length, would have to
Develop the spray and enhancing hybrid technology of fuel.The dynamic pressure of Supersonic Stream is higher, compressible shear layer rate of rise is very slow,
The penetration of fuel is very limited, realizes the difficult of mixing and burning.
In order to solve this problem, researcher combustion chamber come flow center be arranged a spray fuel supporting plate, with
This obtains better fuel distribution, and enhances the mixing of fuel and air, improves efficiency of combustion.It is many to study channel syndrome
Bright, the tail portion of supporting plate can generate the recirculating zone for facilitating flame stabilization, while the supporting plate tail portion Jing Guo special designing can also
Generation flows to whirlpool, is conducive to the blending of fuel and air.Supporting plate has become a kind of current widely used mixing enhancement device.
But there is also certain problems in actual spray burn application for the various supporting plate structures proposed at present.For
Gas-flow resistance caused by reduction supporting plate, the thickness of supporting plate are often designed smaller, thus cause what supporting plate tail end formed to return
Regional scope very little is flowed, there are certain limitations for range of flame.Due to the instable influence of air-flow, supporting plate is being carried out
In the spray and combustion process of fuel, the flame stabilization source that recirculating zone is formed be possibly blown it is de-, and lead to that flame can not be connected and
It is flame-out.Interlock trailing edge for using to strengthen the supporting plate of mixed effect, range of flame is smaller.Although introducing flow direction
Whirlpool enhances mixed effect of the exhibition to diffusion, but the size of tail portion recirculating zone and the area of incendiary source is made to become smaller, significantly
Reduce flame stabilization performance.
As the modular design of supporting plate spray burner, document " Experimental Study of Strut
Injections in a Supersonic Combustor Using OH-PLIF " (AIAA 2005-3304) disclose it is various
The branch panel configuration of form parameter.Document " Planar Imaging Investigation of Supersonic Hypermixer
Configurations》(Aiaa Aerospace Sciences Meeting Including the New Horizons
Forum and Aerospace Exposition.2013:7-13) the supporting plate ejector filler of four kinds of different tail structures is carried out
Research.These documents, which are only started with from spray mixed performance, proposes various supporting plate spray burners, without considering combustibility.
Document " Numerical and Experimental Studies of Injection Modeling for Supersonic
Flame-Holding " (Journal of Propulsion and Power, 2005,21 (3): 504-511.) to supporting plate
It is found in research, the ability of the stable flame of supporting plate and the thickness of supporting plate are closely related.If the thickness of supporting plate is lower than 7mm, will be complete
Combustion zone is established completely without method.And they think, if being used to stablize flame, supporting plate of the thickness lower than 10mm needs choosing with caution
With.
Existing technology goes optimization supporting plate spray from the angle of the spray orifice position of supporting plate and trailing edge structures pneumatic design mostly
The performance of burner.It needs to weigh drag losses, spray mixed performance, combustibility when practical engineering application,
There are many limitations in design.
Summary of the invention
The purpose of the invention is to overcome the deficiencies of the prior art and provide a kind of supporting plate spray for being provided with pulse firing source
Burner and ignition method are infused, the present invention is reduced for thin supporting plate and using tail portion recirculating zone caused by trailing edge alternating structure
Under conditions of, since incendiary source energy is small, it is difficult to realize igniting, flame stabilization and the problem of vulnerable to interference in air flow, pass through setting
The mode in pulse firing source carries out auxiliary firing and flame stabilization.
To achieve the goals above, one aspect of the present invention provides a kind of supporting plate spray burning dress for being provided with pulse firing source
It sets, including the fixed panel of supporting plate, the fixed panel of the supporting plate is equipped with supporting plate ontology, and the tail portion of the supporting plate ontology is trailing edge friendship
Wrong structure, the tail portion of the supporting plate ontology are respectively equipped with array ignitor and multiple fuel jet orifices, the array igniting
Electrode is electrically connected with high-voltage pulse power source.
Preferably, the array ignitor includes multiple igniter electrode assemblies, and each igniter electrode assembly is all provided with
Set the intervening portion in each adjacent trailing edge.
Preferably, each igniter electrode assembly includes two ignitor being fixed together anodes and ignitor
Cathode, the ignitor anode and the ignitor cathode are arranged in parallel along the tail length direction of the supporting plate ontology,
And the front end of the ignitor anode and the ignitor cathode is oppositely arranged.
Preferably, each fuel jet orifice is arranged on the inside of the trailing edge.
Preferably, supporting plate ontology lower end is equipped with supporting plate fixed feet, and the supporting plate ontology passes through the supporting plate fixed feet
It is mounted on the fixed panel of the supporting plate.
Preferably, the array ignitor is connect with the high-voltage pulse power source by insulated cable, the insulation
Cable passes through the supporting plate body interior and draws from the supporting plate fixed feet, and connect with the high-voltage pulse power source.
Second aspect of the present invention provides a kind of ignition method of supporting plate spray burner for being provided with pulse firing source, high
The electric discharge of pulse power source control array ignitor is pressed, the ignitor anode and adjacent ignitor of igniter electrode assembly are passed through
The pulsed arc formed between the ignitor cathode of component carries out continuous ignition to fuel.
Through the above technical solutions, the invention has the benefit that
(1) array ignitor is arranged in the tail portion of supporting plate ontology in the present invention, passes through the pulse of array ignitor
Electric discharge forms multiple high temperature discharge regions, realizes the uninterrupted igniting to fuel, serves as continuity point fire source, high-voltage pulse power source pair
The electric discharge of array ignitor carries out active control, induces the incendiary source continuous-stable of generation, it is not easy to the air pulsed
Air-flow is put out, and ensure that flame linking and stable function；
(2) igniter electrode assembly is arranged at the intervening portion of each adjacent trailing edge, the tail portion in supporting plate ontology
In air-flow shaded areas, to the interference very little of combustion chamber mainstream air-flow, the aerodynamic loading that igniter electrode assembly is born also very little can
Reduce the requirement designed igniter electrode assembly structural loads；
(3) position of igniter electrode assembly is relatively fixed, thus the high temperature discharge region phase formed in fulcrum body tail portion
It is influenced to fixation, therefore not by different incoming flow operating conditions, eliminates the difference due to tail portion flame ignition delay distance to burning
The influence of heat release distribution；
(4) the pulsed discharge energy consumption that igniter electrode assembly generates is low, promotes flame stabilization by continuously-running duty, can be
Still there is good flame stabilization performance, so as to reduce supporting plate by the design of thin supporting plate in the case of supporting plate ontology is very thin
The aerodynamic drag of ontology and the blocking caused by Combustion Flow Field influence.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of supporting plate ontology；
Fig. 3 is the structural schematic diagram of igniter electrode assembly；
Fig. 4 is the working principle of the invention figure.
Description of symbols
The tail portion of 1 supporting plate ontology, 2 supporting plate ontology
3 supporting plates fix 4 supporting plate fixed feet of panel
5 igniter electrode assembly, 6 fuel jet orifice
7 trailing edge, 8 ignitor anode
9 ignitor cathode, 10 pulsed arc
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The present invention provides a kind of supporting plate spray burner for being provided with pulse firing source, as depicted in figs. 1 and 2, including
Supporting plate fixes panel 3, and the fixed panel 3 of the supporting plate is equipped with supporting plate ontology 1, and the tail portion 2 of the supporting plate ontology interlocks for trailing edge
Structure, the tail portion 2 of the supporting plate ontology are respectively equipped with array ignitor and multiple fuel jet orifices 6, the array igniting
Electrode is electrically connected with high-voltage pulse power source.
In the present invention, the array ignitor includes multiple igniter electrode assemblies 5, each igniter electrode assembly 5
It is arranged at the intervening portion of each adjacent trailing edge 7.Wherein, as shown in figure 3, each igniter electrode assembly 5 includes two
A ignitor anode 8 and ignitor cathode 9 being fixed together, the ignitor anode 8 and the ignitor are negative
Pole 9 is arranged in parallel along 2 length direction of tail portion of the supporting plate ontology, and ignitor anode 8 and the ignitor are negative
The front end of pole 9 is oppositely arranged, so that the front end of ignitor anode 8 and the ignitor cathode 9 constitutes Y-shaped.
The tail portion 2 of supporting plate ontology of the present invention is trailing edge cross structure, can generate flow direction in the tail portion of fulcrum body 2
Whirlpool is conducive to the blending of fuel and air；The intervening portion of each adjacent trailing edge 7 is equipped with igniter electrode assembly 5, Duo Gedian
Fiery 5 forming array formula ignitor of electrode assembly, array ignitor are electrically connected with high-voltage pulse power source, igniter electrode assembly
Pulsed discharge is generated between 5 ignitor anode 8 and the ignitor cathode 9 of adjacent igniter electrode assembly 5, passes through multiple phases
Pulsed discharge between adjacent igniter electrode assembly 5 forms multiple high temperature discharge regions, realizes the uninterrupted igniting to fuel, serves as
Continuity point fire source, high-voltage pulse power source carry out active control to the electric discharge of igniter electrode assembly 5, induce the incendiary source of generation continuous
Stablize, it is not easy to which the air draught pulsed is put out, and ensure that flame linking and stable function.
Igniter electrode assembly 5 of the present invention is located at the intervening portion of each adjacent trailing edge 7, the tail portion in supporting plate ontology
In 2 air-flow shaded areas, to the interference very little of combustion chamber mainstream air-flow, the aerodynamic loading that igniter electrode assembly 5 is born is also very
It is small, the requirement to the design of 5 structural loads of igniter electrode assembly can be reduced；The position of igniter electrode assembly 5 of the present invention is relatively fixed,
It to which the high temperature discharge region formed in the tail portion of fulcrum body 2 is relatively fixed, therefore is not influenced, is disappeared by different incoming flow operating conditions
Influence in addition to the difference due to tail portion firing delay distance to burning heat release distribution.
The tail portion 2 of supporting plate ontology of the present invention is equipped with multiple fuel jet orifices 6, and each fuel jet orifice 6 is arranged at institute
7 inside of trailing edge is stated, the fuel sprayed out of described fuel jet orifice 6 is enabled to flow through the ignitor of igniter electrode assembly 5 just
Between pole 8 and the ignitor cathode 9 of adjacent igniter electrode assembly 5, to be ignited, specific work process is as shown in figure 4, combustion
Stream is sprayed through 1 inside of supporting plate ontology and out of fuel jet orifice 6, and the fuel after ejection is mixed with incoming air, ignition power
Pole component 5 ignitor anode 8 and the ignitor cathode 9 of adjacent igniter electrode assembly 5 between generate pulsed arc 10 into
Row electric discharge, forms multiple high temperature discharge regions by the pulsed discharge between multiple adjacent igniter electrode assemblies 5, partly-premixed
Combustion gas stream is ignited after flowing through the high temperature discharge region that igniter electrode assembly 5 is formed.Wherein, dotted arrow indicates incoming flow in Fig. 4
Air, dotted line indicate the fuel sprayed out of described fuel jet orifice 6.
Wherein, 1 lower end of supporting plate ontology is equipped with supporting plate fixed feet 4, and the supporting plate ontology 1 passes through the supporting plate fixed feet
4 are mounted on the fixed panel 3 of the supporting plate；Each igniter electrode assembly 5 passes through insulated cable with the high-voltage pulse power source
Connection, the insulated cable pass through the supporting plate ontology 1 inside from the supporting plate fixed feet 4 draw, and with the high-voltage pulse
Power electric connection.
The present invention also provides a kind of ignition method of supporting plate spray burner for being provided with pulse firing source, high-voltage pulses
Power supply controls the electric discharge of array ignitor, passes through the ignitor anode 8 of igniter electrode assembly 5 and adjacent igniter electrode assembly
The pulsed arc 10 formed between 5 ignitor cathode 9 carries out continuous ignition to fuel.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (7)
1. a kind of supporting plate spray burner for being provided with pulse firing source, which is characterized in that it is fixed panel (3) including supporting plate,
The supporting plate fixed panel (3) is equipped with supporting plate ontology (1), and the tail portion (2) of the supporting plate ontology is trailing edge cross structure, described
The tail portion (2) of supporting plate ontology is respectively equipped with array ignitor and multiple fuel jet orifices (6), the array ignitor with
High-voltage pulse power source electrical connection.
2. the supporting plate spray burner according to claim 1 for being provided with pulse firing source, which is characterized in that the battle array
Column ignitor includes multiple igniter electrode assemblies (5), and each igniter electrode assembly (5) is arranged at each adjacent tail
The intervening portion of edge (7).
3. the supporting plate spray burner according to claim 2 for being provided with pulse firing source, which is characterized in that each described
Igniter electrode assembly (5) includes two ignitors being fixed together positive (8) and ignitor cathode (9), the point
Fiery electrode anode (8) and the ignitor cathode (9) are arranged in parallel along tail portion (2) length direction of the supporting plate ontology, and
The front end of the ignitor positive (8) and the ignitor cathode (9) is oppositely arranged.
4. the supporting plate spray burner according to claim 1 for being provided with pulse firing source, which is characterized in that each described
Fuel jet orifice (6) is arranged on the inside of the trailing edge (7).
5. the supporting plate spray burner according to claim 1 for being provided with pulse firing source, which is characterized in that the branch
Plate ontology (1) lower end is equipped with supporting plate fixed feet (4), and the supporting plate ontology (1) is mounted on described by the supporting plate fixed feet (4)
On supporting plate fixed panel (3).
6. the supporting plate spray burner according to claim 5 for being provided with pulse firing source, which is characterized in that the battle array
Column ignitor is connect with the high-voltage pulse power source by insulated cable, and the insulated cable passes through the supporting plate ontology
(1) internal to be drawn from the supporting plate fixed feet (4), and connect with the high-voltage pulse power source.
7. a kind of ignition method for the supporting plate spray burner for being provided with pulse firing source, which is characterized in that high-voltage pulse electric
Source control array ignitor uninterruptedly discharges, and passes through the ignitor positive (8) of igniter electrode assembly (5) and adjacent igniting
The pulsed arc (10) formed between the ignitor cathode (9) of electrode assembly (5) carries out continuous ignition to fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810772198.3A CN109059044A (en) | 2018-07-13 | 2018-07-13 | A kind of supporting plate spray burner and ignition method being provided with pulse firing source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810772198.3A CN109059044A (en) | 2018-07-13 | 2018-07-13 | A kind of supporting plate spray burner and ignition method being provided with pulse firing source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109059044A true CN109059044A (en) | 2018-12-21 |
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ID=64816545
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810772198.3A Pending CN109059044A (en) | 2018-07-13 | 2018-07-13 | A kind of supporting plate spray burner and ignition method being provided with pulse firing source |
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| Country | Link |
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| CN (1) | CN109059044A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050172637A1 (en) * | 2004-02-10 | 2005-08-11 | Ponziani Robert L. | Detecting spark in igniter of gas turbine engine by detecting signals in grounded RF shielding |
| CN103343983A (en) * | 2013-07-31 | 2013-10-09 | 哈尔滨工业大学 | Supersonic-speed stable combustion method based on strong magnetic field stable electric arc |
| CN103727562A (en) * | 2013-12-23 | 2014-04-16 | 西北工业大学 | Fuel supporting plate for improving non-premixed combustion of RBCC (rocket-based combined cycle) bimodal combustion chamber |
| CN104879780A (en) * | 2014-02-28 | 2015-09-02 | 北京大学 | Multichannel plasma area igniting burner |
| CN105221319A (en) * | 2015-08-31 | 2016-01-06 | 中国科学院电工研究所 | A kind of for lighting a fire and the sliding discharge reactor of auxiliary combustion |
-
2018
- 2018-07-13 CN CN201810772198.3A patent/CN109059044A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050172637A1 (en) * | 2004-02-10 | 2005-08-11 | Ponziani Robert L. | Detecting spark in igniter of gas turbine engine by detecting signals in grounded RF shielding |
| CN103343983A (en) * | 2013-07-31 | 2013-10-09 | 哈尔滨工业大学 | Supersonic-speed stable combustion method based on strong magnetic field stable electric arc |
| CN103727562A (en) * | 2013-12-23 | 2014-04-16 | 西北工业大学 | Fuel supporting plate for improving non-premixed combustion of RBCC (rocket-based combined cycle) bimodal combustion chamber |
| CN104879780A (en) * | 2014-02-28 | 2015-09-02 | 北京大学 | Multichannel plasma area igniting burner |
| CN105221319A (en) * | 2015-08-31 | 2016-01-06 | 中国科学院电工研究所 | A kind of for lighting a fire and the sliding discharge reactor of auxiliary combustion |
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Effective date of abandoning: 20210702 |