CN110410822A - The rotarytype injector of variable-throat area - Google Patents
The rotarytype injector of variable-throat area Download PDFInfo
- Publication number
- CN110410822A CN110410822A CN201810394543.4A CN201810394543A CN110410822A CN 110410822 A CN110410822 A CN 110410822A CN 201810394543 A CN201810394543 A CN 201810394543A CN 110410822 A CN110410822 A CN 110410822A
- Authority
- CN
- China
- Prior art keywords
- fuel
- cylinder
- open end
- fuel chamber
- oil
- Prior art date
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 claims abstract description 56
- 239000003921 oil Substances 0.000 claims abstract description 38
- 239000000295 fuel oil Substances 0.000 claims abstract description 28
- 230000004323 axial length Effects 0.000 claims abstract description 8
- 239000007921 spray Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 241001347978 Major minor Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
It is an object of the present invention to provide the rotarytype injectors of variable-throat area, there is different spray nozzles discharge area under different oil pressure.Wherein nozzle body has axial length, the first open end on axial length with oil inlet side and the second open end positioned at fuel-displaced side, fuel chamber through first open end and second open end, and the pipeline being provided with into fuel oil is outwardly protruded on axle body, the fuel chamber has internal diameter flaring portion in fuel-displaced side；End cap is detachably connected the first open end of nozzle body；Cylinder is movably arranged in the fuel chamber, and the gap between the fuel chamber forms the fuel gallery passed through for fuel oil, and one end has outer diameter flaring portion, and opposite with internal diameter flaring portion, the other end is opposite with end cap and is spaced apart；Elastic component connects the end cap and the cylinder；The fuel gallery between cylinder and nozzle body is arranged in axial swirl blades.
Description
Technical field
The present invention relates to engine chamber more particularly to engine chamber fuel nozzles.
Background technique
Fluid combustion, it is necessary to first evaporate olefiant gas, then combustion reaction is carried out with gaseous state.Atomizing of liquid fuel and
Evaporation is a vital process to gas-turbine combustion chamber, and being atomized is the basis evaporated.Aero-gas turbine
Fuel-oil atmozation generally uses fuel nozzle to realize.The most popular pressure-type atomizer on aero-gas turbine at present
For rotarytype injector.In rotarytype injector, fuel oil under oil pressure actuated by the whirl hole or eddy flow slot in nozzle, make fuel oil with
The form for rotating liquid film sprays spout.Liquid film by centrifugal force effect it is tapered scatter, increase outlet atomization cone angle, increase with
The area of air interaction, improves atomizing particle size.Fuel supply flow rate variation but for aero-engine, under different operating conditions
At this moment great disparity only changes fuel delivery with change charge oil pressure far from meeting the requirements by simple single oil circuit nozzle.For example,
The minimum and maximum fuel delivery of engine often differs 20 times or more, and fuel feeding pressure difference just differs 400 times.
Common solution is exactly that two spouts are overlappingly filled on a nozzle, distinguishes fuel feeding by two strands of oil circuits, and one
As be referred to as major-minor oil circuit.The fuel nozzle of CFM56 Engine Series and GE90 are double oil circuits swirl atomizer.Wherein, small shape
Under state, auxiliary oil circuit is responsible for fuel feeding, and as charge oil pressure increases, auxiliary oil circuit oil mass is also gradually increased.When oil pressure reaches a timing, master
Oil circuit starts fuel feeding, at this point, major-minor oil circuit starts simultaneously at fuel feeding.
However, it was recognized by the inventor that the more single oil circuit swirl atomizer of this body structure of double oil circuits swirl atomizer first is complicated, as schemed
Shown in 1.Major and minor oil circuit spout 22,24 is shown in Fig. 1, generates the axial swirl blades 26,25 of eddy flow, shell 21,23.It is multiple
Miscellaneous double oil circuits structure can make nozzle processing difficulties and weight increases.
Meanwhile according to the demand of flow, conventional engines combustion chamber double oil circuits swirl atomizer uses check valve (check
Valve) the structure combined with metering valve (metering valve).Specific method is that, in auxiliary oil circuit upstream end, installation is unidirectional
Valve, whether valve is opened is determined by oil pressure.In working connection upstream end, metering valve is installed, fuel oil is become in metering valve by one
The throttle of orifice size, so that using same fuel manifold fuel oil, the major and minor fuel oil of different operating conditions
It can obtain different allocation proportions.For double oil circuits swirl atomizer, in order to make the oil mass of major and minor oil circuit under different operating conditions
Allocation proportion is different, needs to install additional check valve and metering valve, increases the difficulty and engine weight of control system.
Summary of the invention
It is an object of the present invention to provide the rotarytype injectors of variable-throat area, have different spray nozzles under different oil pressure
Discharge area.
The rotarytype injector of variable-throat area according to the present invention comprising nozzle body, end cap, cylinder, elastic component
And axial swirl blades, wherein nozzle body has axial length, with the first open end of oil inlet side on axial length
And the second open end positioned at fuel-displaced side, the fuel chamber through first open end and second open end, and
The pipeline being provided with into fuel oil is outwardly protruded on axle body, the fuel chamber has internal diameter flaring portion in fuel-displaced side；End cap is removable
Unload the first open end of connection nozzle body；Cylinder is movably arranged in the fuel chamber, between the fuel chamber between
Gap forms the fuel gallery passed through for fuel oil, and one end has outer diameter flaring portion, opposite with internal diameter flaring portion, the other end and end
Lid is opposite and is spaced apart；Elastic component connects the end cap and the cylinder；Axial swirl blades are arranged in cylinder and nozzle body
Between the fuel gallery.
In one or more embodiments, the outer diameter flaring portion of the cylinder is cone, and cone generatrices are indent
Curve.
In one or more embodiments, the internal diameter flaring portion longitudinal cross-section of the fuel chamber is linearly outer
Expand.
In one or more embodiments, the nozzle body is stretched out in the outer diameter flaring portion part of the cylinder
Second open end.
In one or more embodiments, the axis into fuel oil pipeline and the fuel chamber is at angle.
In one or more embodiments, the nozzle body is cylindrical shape.
In one or more embodiments, the cylinder is located at the fuel chamber center, the cylinder and the fuel oil
Annular gap is formed between chamber.
An extension spring and column structure are added in nozzle, so that exit area of nozzle is in different spring elongation length
In the case where be varied, and the fuel pressure of the tensile elongation origin stream of spring causes, to have under realizing different oil pressure
The function of different spray nozzles discharge area.
Detailed description of the invention
The above and other features of the present invention, property and advantage will pass through retouching with reference to the accompanying drawings and examples
It states and becomes readily apparent from, in which:
Fig. 1 is traditional double oil circuits swirl atomizer structural schematic diagram；
Fig. 2 is the structural schematic diagram according to the centrifugal spray of the variable-throat area of one or more embodiments.
Specific embodiment
It is following to disclose the embodiment or embodiment of subject technology scheme described in a variety of different implementations.For simplification
The specific example of each element and arrangement is described below in disclosure, and certainly, these are only example, is not to this
The protection scope of invention is limited.Such as the fisrt feature then recorded in the description above second feature or above
It is formed, may include the embodiment that the first and second features are formed by way of directly contacting, also be included in the first He
The embodiment that supplementary features are formed between second feature, to can not directly be contacted between the first and second features.In addition,
In these disclosures may in different examples repeat reference numerals and/or letter.The repetition is in order to brief and clear
Chu itself does not indicate each embodiment being discussed and/or interstructural relationship.Further, when first element be with
The mode that second element is connected or combines describes, which includes the reality that the first and second elements are connected directly or are bonded to each other
Mode is applied, also includes so that the first and second interelements ground connection is connected or is tied each other using one or more other intervening elements additions
It closes.
In embodiment as shown in Figure 2, the rotarytype injector of variable-throat area include nozzle body 11, end cap 13,
Cylinder 16, elastic component 14 and axial swirl blades 17.Nozzle body 11 has axial length, has oil inlet on axial length
First open end of side is located at left end in figure, and positioned at the second open end of fuel-displaced side, right end is located in figure.Nozzle
Shell 11 also has the fuel chamber 15 through first open end and second open end, and outwardly protrudes on axle body
It is provided with the pipeline 12 into fuel oil, the fuel chamber 15 has internal diameter flaring portion 151 in fuel-displaced side.End cap 13 is detachably connected
First open end of nozzle body 11.Cylinder 16 is formed being movably arranged the gap between fuel chamber 15 in fuel chamber 15
For the fuel gallery that fuel oil passes through, one end has outer diameter flaring portion 161, opposite with internal diameter flaring portion 151, the other end with
End cap 13 is opposite and is spaced apart.14 connection end cap 13 of elastic component and cylinder 16.The setting of axial swirl blades 17 is in cylinder 16 and spray
In gap between mouth shell 11.
At work, fuel oil enters fuel chamber 15 by the pipeline 12 on nozzle body 11.As fuel oil gradually increases, in portion
Divide full of after fuel chamber 15, fuel oil is flowed to the right by the fuel gallery between shell 11 and cylinder 16, by axial rotational flow leaf
When piece 17, centrifugal force is generated, is finally sprayed by the jet expansion between shell 11 and cylinder 16.As fuel oil oil pressure gradually increases
Greatly, fuel chamber 15 is completely filled with, and cylinder 16 is pulled extension spring 14 to move right, at this time shell 11 and column by fuel pressure
Exit area of nozzle between body 16 is gradually increased, and fuel oil is sprayed by increasing the jet expansion of area.When the work of engine
Change as situation, such as be switched to cruise by taking off, amount of fuel is reduced, and the fuel oil oil pressure in fuel chamber 15 gradually drops
Low, the pulling force of 16 upper spring 14 of cylinder effect pulls cylinder 16 to be moved to the left, at this time the nozzle face between shell 11 and cylinder 16
Product is gradually reduced, and fuel oil is sprayed by reducing the jet expansion of area.
In one or more embodiments, the outer diameter flaring portion 161 of cylinder 16 is cone, and cone generatrices are interior concave curved
Line.Relative to the shape of linear flaring, discharge area increasing degree is faster.
In one or more embodiments, 151 longitudinal cross-section of internal diameter flaring portion of the fuel chamber 15 is linearly outer
Expand.It may be concave curve, so that discharge area increasing degree is faster.
As shown in Figure 1, the second open end i.e. its right side of nozzle body 11 is stretched out in 161 part of outer diameter flaring portion of cylinder 16
End.Into the axis of fuel oil pipeline 12 and fuel chamber 15 at angle.Nozzle body 11 is cylindrical shape, is also possible to other shapes.
Cylinder 16 is located at fuel chamber center, forms annular gap between cylinder 16 and fuel chamber 15.
In the foregoing embodiment, spring 14 also may adapt to play the elastic component of similar effect.Due to spring one end
It is connected at end cap 13, detachably, in order to later period cleaning, replacement nozzle interior component.
In the foregoing embodiment, to the reset of cylinder 16 using be arranged in spring between 16 end of end cap and cylinder or
The pulling force of person's elastic component realizes, relative to the embodiment by compressed spring, simplifies the structures such as baffle, cavity with being combined
Dress, configuration are simple.
In the foregoing embodiment, axial swirl blades are set in fuel gallery, therefore can produce fuel oil centrifugal rotary
Effect is flowed, fuel oil is made to spray spout in the form of rotating liquid film.Liquid film leans on centrifugal force effect is tapered to scatter, and increases outlet mist
Change cone angle, increases the area with air interaction, improve atomizing particle size.
In the foregoing embodiment, an extension spring and column structure are added in nozzle, so that exit area of nozzle
It is varied in the case where different spring elongation length, and the fuel pressure of the tensile elongation origin stream of spring causes, thus
Realize the function of having different spray nozzles discharge area under different oil pressure.The function is able to solve double oil circuits swirl atomizer, and structure is complicated
The problem of, the performance of double oil circuits swirl atomizer is only achieved that with list oil circuit, and without installing additional needed for double oil circuits swirl atomizer
Check valve and metering valve.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting the present invention, any this field skill
Art personnel without departing from the spirit and scope of the present invention, can make possible variation and modification.Therefore, it is all without departing from
The content of technical solution of the present invention, according to the technical essence of the invention any modification to the above embodiments, equivalent variations
And modification, it each falls within the protection scope that the claims in the present invention are defined.
Claims (7)
1. the rotarytype injector of variable-throat area, which is characterized in that including
Nozzle body has axial length, has the first open end of oil inlet side on axial length and positioned at fuel-displaced side
Second open end, the fuel chamber through first open end and second open end, and outwardly protrude and set on axle body
It is equipped with the pipeline into fuel oil, the fuel chamber has internal diameter flaring portion in fuel-displaced side；
End cap is detachably connected the first open end of nozzle body；
Cylinder is movably arranged in the fuel chamber, and the gap between the fuel chamber forms the fuel oil passed through for fuel oil
Channel, one end have outer diameter flaring portion, and opposite with internal diameter flaring portion, the other end is opposite with end cap and is spaced apart；
Elastic component connects the end cap and the cylinder；And
The fuel gallery between cylinder and nozzle body is arranged in axial swirl blades.
2. rotarytype injector as described in claim 1, which is characterized in that the outer diameter flaring portion of the cylinder is cone,
Cone generatrices are inner concave curve.
3. rotarytype injector as claimed in claim 2, which is characterized in that the internal diameter flaring portion of the fuel chamber is longitudinally cut
Face linearly extends out.
4. rotarytype injector as described in claim 1, which is characterized in that the outer diameter flaring portion part of the cylinder is stretched out
Second open end of the nozzle body.
5. rotarytype injector as described in claim 1, which is characterized in that the axis into fuel oil pipeline and the fuel chamber
Line is at angle.
6. rotarytype injector as described in claim 1, which is characterized in that the nozzle body is cylindrical shape.
7. rotarytype injector as described in claim 1, which is characterized in that the cylinder is located at the fuel chamber center, described
Annular gap is formed between cylinder and the fuel chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810394543.4A CN110410822B (en) | 2018-04-27 | 2018-04-27 | Centrifugal nozzle with variable nozzle opening area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810394543.4A CN110410822B (en) | 2018-04-27 | 2018-04-27 | Centrifugal nozzle with variable nozzle opening area |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110410822A true CN110410822A (en) | 2019-11-05 |
| CN110410822B CN110410822B (en) | 2021-03-02 |
Family
ID=68346801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810394543.4A Active CN110410822B (en) | 2018-04-27 | 2018-04-27 | Centrifugal nozzle with variable nozzle opening area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110410822B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460636A (en) * | 2020-10-27 | 2021-03-09 | 中国船舶重工集团公司第七0三研究所 | Double-oil-way single-nozzle double-fuel nozzle |
| CN113108313A (en) * | 2021-04-01 | 2021-07-13 | 中国科学院工程热物理研究所 | Single-way oil supply self-adaptive double-membrane fuel oil atomization device |
| CN115264535A (en) * | 2022-07-29 | 2022-11-01 | 中国航发湖南动力机械研究所 | Nozzle and gas turbine engine with same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2510639Y (en) * | 2001-11-21 | 2002-09-11 | 卜冈 | New-type fuel injector |
| CN2816391Y (en) * | 2004-07-15 | 2006-09-13 | 于魁江 | Oil jetting device |
| CN1932380A (en) * | 2006-01-23 | 2007-03-21 | 中国人民解放军国防科学技术大学 | Back pressure adaptive constant-flow nozzle |
| CN103397964A (en) * | 2013-08-19 | 2013-11-20 | 王抗美 | Centrifugal conical-spray oil nozzle |
| CN103967671A (en) * | 2014-05-22 | 2014-08-06 | 中国北方发动机研究所(天津) | Dual-valve orifice-area-variable fuel nozzle |
-
2018
- 2018-04-27 CN CN201810394543.4A patent/CN110410822B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2510639Y (en) * | 2001-11-21 | 2002-09-11 | 卜冈 | New-type fuel injector |
| CN2816391Y (en) * | 2004-07-15 | 2006-09-13 | 于魁江 | Oil jetting device |
| CN1932380A (en) * | 2006-01-23 | 2007-03-21 | 中国人民解放军国防科学技术大学 | Back pressure adaptive constant-flow nozzle |
| CN103397964A (en) * | 2013-08-19 | 2013-11-20 | 王抗美 | Centrifugal conical-spray oil nozzle |
| CN103967671A (en) * | 2014-05-22 | 2014-08-06 | 中国北方发动机研究所(天津) | Dual-valve orifice-area-variable fuel nozzle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460636A (en) * | 2020-10-27 | 2021-03-09 | 中国船舶重工集团公司第七0三研究所 | Double-oil-way single-nozzle double-fuel nozzle |
| CN113108313A (en) * | 2021-04-01 | 2021-07-13 | 中国科学院工程热物理研究所 | Single-way oil supply self-adaptive double-membrane fuel oil atomization device |
| CN115264535A (en) * | 2022-07-29 | 2022-11-01 | 中国航发湖南动力机械研究所 | Nozzle and gas turbine engine with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110410822B (en) | 2021-03-02 |
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