CN109340823A - A kind of head of combustion chamber oil gas mixing machine - Google Patents
A kind of head of combustion chamber oil gas mixing machine Download PDFInfo
- Publication number
- CN109340823A CN109340823A CN201811082338.0A CN201811082338A CN109340823A CN 109340823 A CN109340823 A CN 109340823A CN 201811082338 A CN201811082338 A CN 201811082338A CN 109340823 A CN109340823 A CN 109340823A
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- China
- Prior art keywords
- combustion
- main combustion
- grade
- oil
- combustion stage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F23R3/38—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply comprising rotary fuel injection means
Abstract
The invention discloses a kind of head of combustion chamber oil gas mixing machines, main combustion stage component including centrally located pre-burning level assembly and positioned at pre-burning level assembly periphery, pre-burning level assembly includes pre-combustion grade central nozzle and pre-combustion grade central nozzle periphery is arranged in and coaxially arranges pre-combustion grade cyclone, main combustion stage component include main combustion stage cyclone and be arranged in it is main combustion swirl channel side wall on multiple main combustion stage emple holes, pre-combustion grade central nozzle is connected to auxiliary oil circuit, and main combustion stage emple hole is connected to working connection.Pre-combustion grade cyclone includes first order axial swirler and second level radial swirler, and main combustion stage cyclone is level-one axial swirler.It is ensured by improving pre-combustion grade swirl vane angles to be realized to smaller the misting of operating condition of swirl atomizer oil pressure, improves fuel-oil atmozation quality, improve efficiency of combustion, improve point extinguishment characteristics.
Description
Technical field
The present invention relates to a kind of gas turbine combustors more particularly to a kind of head of combustion chamber oil gas mixing machines.
Background technique
It is widely answered currently, double oil circuits head of combustion chamber oil gas mixing machine has in gas turbine combustors
With fuel oil respectively enters pre-combustion grade and main combustion stage by auxiliary oil circuit and working connection, real by the way that most of fuel oil is sprayed into main combustion stage
The existing partly-premixed burning of premix to reduce primary zone temperature, and then reduces discharged nitrous oxides, and sub-fraction fuel oil passes through
Pre-combustion grade nozzle feeds combustion chamber.Existing pre-combustion grade nozzle generally uses swirl atomizer, and main combustion stage nozzle mostly uses round direct-injection
Nozzle, the two cooperates to realize fuel-oil atmozation, however existing pre-combustion grade swirl atomizer mostly uses fuel-rich combustion to improve a little
Fiery performance is difficult to realize igniting in the smaller situation of oil pressure.
Summary of the invention
The object of the present invention is to provide a kind of head of combustion chamber oil gas mixing machines.
The purpose of the present invention is what is be achieved through the following technical solutions:
Head of combustion chamber oil gas mixing machine of the invention, including centrally located pre-burning level assembly and be located at the pre-combustion grade
The main combustion stage component of component periphery, the pre-burning level assembly include pre-combustion grade central nozzle and are arranged at the pre-combustion grade center
Nozzle periphery and the pre-combustion grade cyclone coaxially arranged, the main combustion stage component include that main combustion stage cyclone and setting exist
Multiple main combustion stage emple holes on main combustion swirl channel side wall, the pre-combustion grade central nozzle are connected to auxiliary oil circuit, the master
Combustion grade emple hole is connected to working connection.
As seen from the above technical solution provided by the invention, head of combustion chamber oil gas provided in an embodiment of the present invention is mixed
Mixed device, wherein pre-combustion grade fuel oil is sprayed by swirl atomizer, and main combustion stage fuel oil is sprayed by direct-injection nozzle, and fuel-oil atmozation can be improved
Quality and efficiency of combustion, and reduce pollutant emission.
Detailed description of the invention
Fig. 1 is head of combustion chamber oil gas mixing machine positive structure diagram provided in an embodiment of the present invention.
Fig. 2 is head of combustion chamber oil gas mixing machine side elevational cross-section structural schematic diagram provided in an embodiment of the present invention.
In figure:
Pre-combustion grade central nozzle 1, first order axial swirler 2, second level radial swirler 3, first order swirl channel 4,
Main combustion stage emple hole 5, main combustion stage cyclone 6.
Specific embodiment
The embodiment of the present invention will be described in further detail below.What is be not described in detail in the embodiment of the present invention is interior
Appearance belongs to the prior art well known to professional and technical personnel in the field.
Head of combustion chamber oil gas mixing machine of the invention, preferable specific embodiment is:
Main combustion stage component including centrally located pre-burning level assembly and positioned at the pre-burning level assembly periphery, the pre-burning
Level assembly includes pre-combustion grade central nozzle and pre-combustion grade central nozzle periphery is arranged in and coaxially arranges pre-burning
Grade cyclone, the main combustion stage component include main combustion stage cyclone and be arranged in it is main combustion swirl channel side wall on multiple main combustions
Grade emple hole, the pre-combustion grade central nozzle are connected to auxiliary oil circuit, and the main combustion stage emple hole is connected to working connection.
The pre-combustion grade cyclone includes first order axial swirler and second level radial swirler, and the first order is axial
Cyclone is set up directly on the central nozzle periphery, and the second level radial swirler setting is exported in first order swirl channel
Neighbouring position；
Oil film vacuole is formed, at the pre-combustion grade center nozzle outlet when fuel pressure is smaller by adjusting described pre-
It fires grade swirler blades angle and improves atomizing effect to realize that rotational flow air acts directly on oil film vacuole, reduce point firer
Condition cyclone pressure drop.
The main combustion stage emple hole is evenly distributed in the circumferential direction on main combustion swirl channel side wall.
It is provided with cyclic annular working connection oil pocket on the main combustion swirl channel side wall, each main combustion stage emple hole is and institute
Cyclic annular working connection oil pocket connection is stated, the ring-type working connection oil pocket is connected to working connection.
The main combustion stage cyclone is level-one axial swirler.
Fuel oil respectively enters pre-burning level assembly and main combustion stage component by auxiliary oil circuit and working connection, under low operating condition, pre-burning
The independent fuel feeding of level assembly, the fuel oil in auxiliary oil circuit carry out initial atomization by pre-combustion grade central nozzle, and then in pre-combustion grade eddy flow
It is further atomized under the action of device；Under big operating condition, pre-burning level assembly is worked at the same time with main combustion stage component, in working connection
Fuel oil sprayed by main combustion stage direct-injection nozzle, and be atomized by main combustion stage cyclone.
The head of combustion chamber oil gas mixing machine of this hair, by improving pre-combustion grade swirl vane angles come to swirl atomizer oil pressure
Smaller misting of operating condition, which is realized, to be ensured.It is unable to swirl atomizer when oil pressure is smaller and forms hollow mist cone, but forms oil film vacuole, leads to
It crosses swirl vane angles to act directly on rotational flow air on oil film vacuole, to improve fuel-oil atmozation quality, improves burning effect
Rate improves point extinguishment characteristics, reduces pollutant emission.
In head of combustion chamber oil gas mixing machine of the invention, pre-burning level assembly by improve pre-combustion grade swirl vane angles come
Smaller the misting of operating condition of swirl atomizer oil pressure is realized and is ensured, swirl atomizer is unable to when oil pressure is smaller and forms hollow mist cone, but
Oil film vacuole is formed, is acted directly on rotational flow air on oil film vacuole by swirl vane angles, to improve fuel-oil atmozation
Quality improves efficiency of combustion, improves point extinguishment characteristics, reduces pollutant emission；Main combustion stage component, for working connection fuel oil into
Row atomization, realizes poor oil firing under big operating condition.Pre-combustion grade fuel-oil atmozation is completed by central nozzle and cyclone；Main combustion stage fuel spray
Change and is completed by star direct-injection nozzle and cyclone.
Compared with the existing technology, head of combustion chamber oil gas mixing machine of the invention has significant technical effect: by changing
It is ensured into pre-combustion grade swirl vane angles to be realized to smaller the misting of operating condition of swirl atomizer oil pressure, improves fuel-oil atmozation quality,
Efficiency of combustion is improved, point extinguishment characteristics are improved.
Specific embodiment:
As shown in Figure 1 and Figure 2, head of combustion chamber oil gas mixing machine of the invention, including centrally located pre-burning level assembly
(1,2,3,4) and main combustion stage component (5,6) positioned at pre-burning level assembly periphery.Pre-burning level assembly includes pre-combustion grade central nozzle 1
And the pre-combustion grade cyclone 2,3 that 1 periphery of pre-combustion grade central nozzle is set and is coaxially arranged, pre-combustion grade cyclone is by two
Grade cyclone composition, the first order are axial swirler 2, and the second level is radial swirler 3, the combustion that pre-combustion grade central nozzle 1 sprays
Oil carries out preliminary swirling flow atomizing in the rotational flow air of first order swirl channel 4 and middle first order axial swirler 2, and second
It under the action of grade radial swirler 3, is further blended with air in its swirl channel, two-stage pre-combustion grade cyclone 2,3 is used for
Auxiliary oil circuit fuel oil is atomized, Central backflow area is provided, fuel-rich combustion is realized, plays the role of surely firing, improves the flame-out property of point
Energy.
In head of combustion chamber oil gas mixing machine of the invention, fuel oil respectively enters pre-combustion grade group by auxiliary oil circuit and working connection
Part and main combustion stage component.Under low operating condition, the independent fuel feeding of pre-burning level assembly, pre-combustion grade fuel oil passes through centrifugal atomizing central nozzle 1
Initial atomization is carried out, and then is further atomized under the action of two-stage cyclone gas, stablizes in preignition zone and burns, is played steady
The effect of combustion；Under big operating condition, pre-burning level assembly is worked at the same time with main combustion stage component, and main combustion stage fuel oil passes through star direct-injection nozzle
It sprays, is atomized by third level axial swirler, is burnt in primary zone, reduce pollutant emission.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different.The equivalent or simple change that all structure, feature and principles described according to the invention patent design are done, is wrapped
It includes in the scope of protection of the patent of the present invention.Those skilled in the art can be to described specific implementation
Example is done various modifications or additions or is substituted in a similar manner, and without departing from structure of the invention or surmounts this
Range as defined in the claims, is within the scope of protection of the invention.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Within the technical scope of the present disclosure, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (6)
1. a kind of head of combustion chamber oil gas mixing machine, which is characterized in that including centrally located pre-burning level assembly and be located at described
The main combustion stage component of pre-burning level assembly periphery, the pre-burning level assembly include pre-combustion grade central nozzle and are arranged in the pre-burning
Grade central nozzle periphery and the pre-combustion grade cyclone coaxially arranged, the main combustion stage component include main combustion stage cyclone and
Multiple main combustion stage emple holes on main combustion swirl channel side wall are set, the pre-combustion grade central nozzle is connected to auxiliary oil circuit,
The main combustion stage emple hole is connected to working connection.
2. head of combustion chamber oil gas mixing machine according to claim 1, which is characterized in that the pre-combustion grade cyclone includes
First order axial swirler and second level radial swirler, the first order axial swirler are set up directly on the central nozzle
Periphery, the second level radial swirler are arranged in first order swirl channel near exit position；
Oil film vacuole is formed, at the pre-combustion grade center nozzle outlet when fuel pressure is smaller by adjusting the pre-combustion grade
Swirler blades angle improves atomizing effect to realize that rotational flow air acts directly on oil film vacuole, reduces igniting operating condition rotation
Flow device pressure drop.
3. head of combustion chamber oil gas mixing machine according to claim 1, which is characterized in that main combustion stage emple hole edge
Circumferencial direction is evenly arranged on main combustion swirl channel side wall.
4. head of combustion chamber oil gas mixing machine according to claim 3, which is characterized in that the main combustion swirl channel side wall
On be provided with cyclic annular working connection oil pocket, each main combustion stage emple hole is connected to the cyclic annular working connection oil pocket, the ring
Shape working connection oil pocket is connected to working connection.
5. head of combustion chamber oil gas mixing machine according to claim 4, which is characterized in that the main combustion stage cyclone is one
Grade axial swirler.
6. head of combustion chamber oil gas mixing machine according to any one of claims 1 to 5, which is characterized in that fuel oil is by secondary
Oil circuit and working connection respectively enter pre-burning level assembly and main combustion stage component, under low operating condition, the independent fuel feeding of pre-burning level assembly, and secondary oil
Fuel oil in road carries out initial atomization by pre-combustion grade central nozzle, and then carries out further under the action of pre-combustion grade cyclone
Atomization；Under big operating condition, pre-burning level assembly is worked at the same time with main combustion stage component, and the fuel oil in working connection passes through main combustion stage direct-injection
Nozzle sprays, and is atomized by main combustion stage cyclone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811082338.0A CN109340823A (en) | 2018-09-17 | 2018-09-17 | A kind of head of combustion chamber oil gas mixing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811082338.0A CN109340823A (en) | 2018-09-17 | 2018-09-17 | A kind of head of combustion chamber oil gas mixing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109340823A true CN109340823A (en) | 2019-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811082338.0A Pending CN109340823A (en) | 2018-09-17 | 2018-09-17 | A kind of head of combustion chamber oil gas mixing machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087625A (en) * | 2021-12-01 | 2022-02-25 | 北京动力机械研究所 | Self-adaptive swirler device with adjustable blade angle |
| CN114636171A (en) * | 2022-02-18 | 2022-06-17 | 北京航空航天大学 | Pre-combustion-stage double-oil-way pre-film type air atomizing nozzle |
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| DE60217942T2 (en) * | 2001-05-31 | 2007-11-08 | General Electric Co. | Method and device for controlling emissions in a combustion chamber |
| CN102889617A (en) * | 2012-09-12 | 2013-01-23 | 北京航空航天大学 | Premixing and pre-evaporation combustor for main combustion stage using radial film formation |
| CN102901127A (en) * | 2012-09-11 | 2013-01-30 | 北京航空航天大学 | Premixing pre-evaporation low-pollution combustion chamber for main-combustion-stage double-layer pre-film three-cyclone |
| CN203671655U (en) * | 2013-12-31 | 2014-06-25 | 中航商用航空发动机有限责任公司 | Combustor fuel injecting and mixing system |
| CN104406197A (en) * | 2014-11-24 | 2015-03-11 | 中国科学院工程热物理研究所 | Low-emission reverse flow combustor adopting radial swirl injection and fuel oil grading schemes |
| CN107763666A (en) * | 2017-11-07 | 2018-03-06 | 中国科学院工程热物理研究所 | A kind of head of combustion chamber oil gas mixing machine and the engine with the structure |
-
2018
- 2018-09-17 CN CN201811082338.0A patent/CN109340823A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60217942T2 (en) * | 2001-05-31 | 2007-11-08 | General Electric Co. | Method and device for controlling emissions in a combustion chamber |
| CN102901127A (en) * | 2012-09-11 | 2013-01-30 | 北京航空航天大学 | Premixing pre-evaporation low-pollution combustion chamber for main-combustion-stage double-layer pre-film three-cyclone |
| CN102889617A (en) * | 2012-09-12 | 2013-01-23 | 北京航空航天大学 | Premixing and pre-evaporation combustor for main combustion stage using radial film formation |
| CN203671655U (en) * | 2013-12-31 | 2014-06-25 | 中航商用航空发动机有限责任公司 | Combustor fuel injecting and mixing system |
| CN104406197A (en) * | 2014-11-24 | 2015-03-11 | 中国科学院工程热物理研究所 | Low-emission reverse flow combustor adopting radial swirl injection and fuel oil grading schemes |
| CN107763666A (en) * | 2017-11-07 | 2018-03-06 | 中国科学院工程热物理研究所 | A kind of head of combustion chamber oil gas mixing machine and the engine with the structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087625A (en) * | 2021-12-01 | 2022-02-25 | 北京动力机械研究所 | Self-adaptive swirler device with adjustable blade angle |
| CN114636171A (en) * | 2022-02-18 | 2022-06-17 | 北京航空航天大学 | Pre-combustion-stage double-oil-way pre-film type air atomizing nozzle |
| CN114636171B (en) * | 2022-02-18 | 2023-01-17 | 北京航空航天大学 | Pre-combustion-stage double-oil-way pre-film type air atomizing nozzle |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190215 |
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| RJ01 | Rejection of invention patent application after publication |