CN205619380U - Wide region fuel nozzle structure suitable for high altitude work - Google Patents
Wide region fuel nozzle structure suitable for high altitude work Download PDFInfo
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- CN205619380U CN205619380U CN201620451827.9U CN201620451827U CN205619380U CN 205619380 U CN205619380 U CN 205619380U CN 201620451827 U CN201620451827 U CN 201620451827U CN 205619380 U CN205619380 U CN 205619380U
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Abstract
The utility model discloses a wide region fuel nozzle structure suitable for high altitude work, include nozzle body, divide oily bushing, vice oil circuit spout, working connection spout, nozzle nut and packing ring A and packing ring B, divide oily bushing to install inside nozzle body, vice oil circuit spout is installed inside nozzle body to near a minute oily bushing terminal surface, working connection spout suit is installed in the working connection spout outside at the vice oil circuit spout outside, packing ring A and packing ring B in proper order to compress tightly through the nozzle nut, the inner chamber of vice oil circuit spout constitutes vice oil circuit swirl chamber, the vice oil circuit spout male cone (strobilus masculinus) of setting on the vice oil circuit spout and the inner chamber of working connection spout constitute the working connection swirl chamber jointly, still be provided with the cooling air runner on the nozzle nut. The utility model provides higher pair oil circuit operating pressure guarantees that high altitude low discharge fuel atomization is good to improve oil -fired atomizing and mixing quality, satisfy the high -efficient stable combustion's in combustion chamber under the low reynolds number condition of high altitude requirement.
Description
Technical field
This utility model belongs to engine apparatus technical field, relates to a kind of fuel nozzle, especially relates to a kind of wide scope fuel nozzle structure being applicable to aloft work.
Background technology
Fuel nozzle is a kind of device providing atomized fuel for aero-engine.The working range broad in order to adapt to aero-engine, often uses fuel feeding wide ranges, and double oil way fuel spray nozzles that each state atomization quality is good and lean extinction limit is wide come to combustor fuel feeding.But when the fuel nozzle of the employing double spout structure form of double oil circuit is to combustor fuel feeding, owing to acceptor, cap jet structure limit and by the restriction of dirt blocking in fuel oil, under the conditions of the charge oil pressure of regulation, it is difficult to ensure and improve fuel oil supply and strengthen spray cone angle.
For overcoming above-mentioned deficiency, the Chinese patent of Publication No. CN103134079A discloses a kind of double oil way fuel spray nozzle.Mainly it is made up of nozzle body, working connection spout, working connection cyclone and auxiliary oil circuit cyclone.Working connection cyclone constitutes working connection spin chamber with the inner chamber of working connection spout；The head bullet of auxiliary oil circuit cyclone constitutes auxiliary oil circuit spin chamber with working connection cyclone inner chamber convergence cone angle；Cooling air flow channel it is designed with on working connection spout.Make aeroengine combustor buring room fuel feeding wide ranges, and make fuel nozzle spray cone angle add 10 °-15 °.
But, when electromotor is in aloft work, nozzle operation condition there occurs large change, and nozzle working connection fuel pressure is extremely low, and in the working connection of main injection jet ejection, fuel oil can not form umbrella-shaped spray cone, has had a strong impact on the atomizing effect of fuel oil；Meanwhile, little from the spray cone angle of the umbrella-shaped spray cone of nozzle cap jet ejection, also it is unfavorable for auxiliary oil circuit combustion oil atomization and the blending with air.The combustion oil atomization now sprayed from nozzle and the effect extreme difference blended with air, greatly have impact on efficiency of combustion and the combustion stability of combustor, electromotor flame-out in flight can be caused time serious, therefore, the working range of electromotor is the broadest, when electromotor needs in aloft work, existing fuel nozzle cannot meet the job requirement of electromotor, needs the fuel nozzle of a kind of suitable wide scope in aloft work.
It addition, the working connection eddy flow groove of above-mentioned pair of oil way fuel spray nozzle is that design is on the face of cylinder of working connection cyclone；Auxiliary oil circuit eddy flow groove is that design is on the bullet of auxiliary oil circuit cyclone.This structure, eddy flow groove shape is irregular, and flow adjusts architectural limitation more, cannot turn down after flow is bigger than normal.And the auxiliary oil circuit cyclone male cone (strobilus masculinus) forming auxiliary oil circuit spin chamber requires the highest with the inner conical surface of working connection cyclone laminating degree, otherwise affects auxiliary oil circuit spout performance.Working connection cyclone external cylindrical surface and working connection spout inner cylinder face require the tightest, and these factors add difficulty of processing and the production cost of nozzle.
Utility model content
The purpose of this utility model is to meet the electromotor requirement when aloft work for existing fuel nozzle, provide a kind of wide scope fuel nozzle structure being applicable to aloft work, thus expand the working range of electromotor, meet the aloft work requirement of electromotor.
This utility model is achieved by the following technical programs.
A kind of wide scope fuel nozzle structure being applicable to aloft work, including nozzle body, divide oil lining, auxiliary oil circuit spout, working connection spout, nozzle nut and packing ring A and packing ring B, described point of oily lining is arranged on inside nozzle body, described auxiliary oil circuit spout is arranged on inside nozzle body, and against a point oil lining end face, described working connection spout is sleeved on outside auxiliary oil circuit spout, packing ring A and packing ring B is sequentially arranged at outside working connection spout, and by nozzle nut compressing, the inner chamber of described auxiliary oil circuit spout constitutes auxiliary oil circuit spin chamber, the auxiliary oil circuit spout male cone (strobilus masculinus) arranged on described auxiliary oil circuit spout and the inner chamber of working connection spout collectively form working connection spin chamber, it is additionally provided with cooling air flow channel on described nozzle nut.
The end face of described auxiliary oil circuit spout and working connection spout is respectively arranged with the tangential oil input channel of auxiliary oil circuit spout and the tangential oil input channel of working connection spout.
The height of the tangential oil input channel of described auxiliary oil circuit vents face is 0.2～0.4mm.
In the spin chamber that described auxiliary oil circuit spout inner chamber is formed, coning angle is 30 °.
Described auxiliary oil circuit spout outlet end is arranged to the auxiliary oil circuit spout outlet face of cylinder, and a diameter of 1.75mm on the auxiliary oil circuit spout outlet face of cylinder.
The port of export on the described auxiliary oil circuit spout outlet face of cylinder is arranged to the auxiliary oil circuit spout outlet conical surface.
The beneficial effects of the utility model are:
Compared with prior art, this utility model has a following remarkable advantage:
(1) using fuel nozzle described in the utility model, electromotor can cut off nozzle working connection fuel feeding when aloft work, improves auxiliary oil circuit operating pressure, it is ensured that small amount of fuel atomization in high-altitude is good；
(2) this utility model is by the Curve guide impeller to auxiliary oil circuit spout, it is to avoid fuel delivery and the deficiency of spray cone angle requirement when existing fuel nozzle can not meet electromotor aloft work, thus ensure that the atomization quality of injection fuel oil；
(3) this utility model is by working connection spout spin chamber Curve guide impeller, it is to avoid when the major and minor oil circuit of nozzle works simultaneously, two umbrella-shaped spray cones interferes；
(4) use fuel nozzle structure described in the utility model, not only simplify the design of nozzle nut, and reached cool down nozzle and blow down ejecting opening surface carbon distribution and the effect of auxiliary fuel atomization；
(5) indicate the atomization quality of fuel nozzle described in the utility model by ground experiment and altitude test and disclosure satisfy that the requirement of high altitude conditions lower combustion chamber efficient stable burning, thus reach the purpose that engine working range broadens.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of auxiliary oil circuit spout in this utility model；
Fig. 3 is the structural representation of working connection spout whirlpool chamber in this utility model；
Fig. 4 is this utility model intermediate fuel oil and air flow schematic diagram.
In figure: 1-nozzle body, 2-divides oil lining, 3-auxiliary oil circuit spout, 4-working connection spout, 5-nozzle nut, 6-packing ring A, 7-packing ring B, coning angle in 8-spin chamber, the tangential oil input channel of 9-auxiliary oil circuit spout, the 10-auxiliary oil circuit spout outlet face of cylinder, the 11-auxiliary oil circuit spout outlet conical surface, 12-auxiliary oil circuit spout male cone (strobilus masculinus), the 13-working connection spout outlet face of cylinder, the 14-working connection tangential oil input channel of spout spout, 15-cools down air flow channel.
Detailed description of the invention
The technical solution of the utility model is described further below, but claimed scope is not limited to described.
nullAs shown in Figure 1 to Figure 3，A kind of wide scope fuel nozzle structure being applicable to aloft work described in the utility model，Including nozzle body 1、Divide oil lining 2、Auxiliary oil circuit spout 3、Working connection spout 4、Nozzle nut 5 and packing ring A6 and packing ring B7，Described point of oily lining 2 is arranged on nozzle body 1 inside，It is internal that described auxiliary oil circuit spout 3 is arranged on nozzle body 1，And against point oil lining 2 end face，Described working connection spout 4 is sleeved on outside auxiliary oil circuit spout 3，Packing ring A6 and packing ring B7 is sequentially arranged at outside working connection spout 4，And compressed by nozzle nut 5，The inner chamber of described auxiliary oil circuit spout 3 constitutes auxiliary oil circuit spin chamber，The auxiliary oil circuit spout male cone (strobilus masculinus) 12 arranged on described auxiliary oil circuit spout 3 and the inner chamber of working connection spout 4 collectively form working connection spin chamber，Cooling air flow channel 15 it is additionally provided with on described nozzle nut 5.There is cooling nozzle, blow down ejecting opening surface carbon distribution and the effect of auxiliary fuel atomization.The technical program uses the double oil circuit in low latitude to work simultaneously, the mode of high-altitude list oil circuit work provides fuel oil for electromotor.That is: in, under the conditions of low latitude, the demand big for meeting engine oil amount, working connection and auxiliary oil circuit fuel feeding simultaneously；Under high altitude conditions, the fuel delivery that electromotor needs is little, cut off working connection fuel feeding before nozzle, change by the independent fuel feeding of auxiliary oil circuit, increase nozzle auxiliary oil circuit fuel flow and spray cone angle by improvement cap jet simultaneously, thus improve combustion oil atomization and blend quality, meet the requirement of combustor efficient stable burning under the conditions of the low reynolds number of high-altitude.
In the technical program, described auxiliary oil circuit spout outer cone diameter increases, it is to avoid interfering between two umbrella-shaped sprays cones when the major and minor oil circuit of nozzle works simultaneously.
Described packing ring A6 and packing ring B7 is arranged on inside nozzle nut 5, plays sealing function.Its middle washer B7 plays to adjust air effect position on umbrella-shaped spray cone and increase one swirling eddy and acts on assisted atomization fuel oil on atomizer cone.
The end face of described auxiliary oil circuit spout 3 and working connection spout 4 is respectively arranged with the tangential oil input channel of auxiliary oil circuit spout 9 and the tangential oil input channel of working connection spout 14.
As shown in Figure 2, described fuel nozzle is secondary improves design to oil circuit spout 3: in the increase height 0.2～0.4mm of the tangential oil input channel of auxiliary oil circuit spout 9 of auxiliary oil circuit spout 3 end face, spin chamber, coning angle 8 is 30 °, a diameter of 1.75mm on the auxiliary oil circuit spout outlet face of cylinder 10, and the port of export on the auxiliary oil circuit spout outlet face of cylinder 10 is arranged to auxiliary oil circuit spout outlet taper seat 11, thus fuel delivery when increasing the independent fuel feeding of nozzle auxiliary oil circuit and the spray cone angle of umbrella-shaped spray cone, it is ensured that the atomization quality of fuel oil.Above three value is to meet nozzle fuel delivery and the requirement of spray cone angle when working independently according to auxiliary oil circuit spout under high altitude conditions and determine.
As shown in Figure 3, described fuel nozzle carries out working connection spout spin chamber Curve guide impeller: working connection spout spin chamber is made up of the inner chamber of auxiliary oil circuit spout male cone (strobilus masculinus) 12 and working connection spout 4, the spray cone angle of the umbrella-shaped spray cone from the ejection of nozzle working connection mouth 4 is increased by increasing the diameter of auxiliary oil circuit spout male cone (strobilus masculinus) 12, thus interfering between two umbrella-shaped sprays cone when avoiding the major and minor oil circuit of nozzle simultaneously to work.The port of export of described working connection mouth 4 is arranged to the working connection spout outlet face of cylinder 13.
Described fuel nozzle carries out nozzle nut Curve guide impeller: cancel the screen board on nozzle nut 5 end face；Which not only simplifies the design of nozzle nut 5, reached have cooling nozzle, blowing ejecting opening surface carbon distribution and the effect of assisted atomization fuel oil equally.
As Figure 1 and Figure 4, the workflow of fuel nozzle described in the utility model is: increase working connection fuel manifold charge oil pressure, fuel oil divides the oil inner passage of lining 2 and the working connection tangential oil input channel of spout spout 14 of working connection spout 4 end face to enter working connection spin chamber by nozzle, carry out the motion that rotates in a circumferential direction, and be injected into combustor by working connection spout 4 with the shape that umbrella-shaped spray is bored and be atomized, blend with air and burn；Increase auxiliary oil circuit fuel manifold charge oil pressure, fuel oil enters auxiliary oil circuit spin chamber by point oil outer ring passage of lining 2 and the tangential oil input channel of auxiliary oil circuit spout 9 of auxiliary oil circuit spout 3 end face, carry out the motion that rotates in a circumferential direction, and be injected into combustor by auxiliary oil circuit spout 3 with the shape that umbrella-shaped spray is bored and be atomized, and blend with air and burn；Air air inlet on nozzle nut 5 enters, and is gone out by end face pore and packing ring tangential admission concentrated flow, cooling fuel nozzle, the carbon distribution blowing down nozzle outer surface auxiliary fuel atomization.
Compared with prior art, air flow channel, by improving air flow channel, is designed to there is an angle with nozzle-axis so that interior air-discharging orifice angle is bigger by this utility model, not only play cooling nozzle and blow down the effect of carbon distribution, also functioning to the effect of assisted atomization fuel oil.Nozzle nut 5 and the distance of nozzle body 1 end face can be adjusted by the packing ring B7 being arranged in whole nozzle nut 5, play the effect of the position adjusting air effect on umbrella-shaped spray cone.Have tangential admission groove on packing ring B7 end face simultaneously, increase one swirling eddy and act on assisted atomization fuel oil on atomizer cone.It is useful that this kind of structure improves fuel atomization effect when working independently high-altitude auxiliary oil circuit spout.
Nozzle described in the utility model, the structure of major and minor oil circuit spout has bigger improvement, and the fit system of major and minor oil circuit spout is the most different.Major and minor oil circuit spout uses the method that end face opens rectangle tangential admission groove, air inlet duct shape is regular, adjustment degree of freedom is big, adjustment fuel flow is very convenient, and the simple structure of major and minor oil circuit spin chamber, significantly reducing product cost, fuel distribution uniformity is improved, and is particularly suitable for the fuel nozzle that high and low empty condition down-off excursion is wide.
Claims (6)
- null1. the wide scope fuel nozzle structure being applicable to aloft work，It is characterized in that: include nozzle body (1)、Divide oil lining (2)、Auxiliary oil circuit spout (3)、Working connection spout (4)、Nozzle nut (5) and packing ring A (6) and packing ring B (7)，Described point of oily lining (2) is arranged on nozzle body (1) inside，It is internal that described auxiliary oil circuit spout (3) is arranged on nozzle body (1)，And against point oil lining (2) end face，Described working connection spout (4) is sleeved on auxiliary oil circuit spout (3) outside，Packing ring A (6) and packing ring B (7) is sequentially arranged at working connection spout (4) outside，And compressed by nozzle nut (5)，The inner chamber of described auxiliary oil circuit spout (3) constitutes auxiliary oil circuit spin chamber，The inner chamber of upper auxiliary oil circuit spout male cone (strobilus masculinus) (12) arranged of described auxiliary oil circuit spout (3) and working connection spout (4) collectively forms working connection spin chamber，Cooling air flow channel (15) it is additionally provided with on described nozzle nut (5).
- A kind of wide scope fuel nozzle structure being applicable to aloft work the most according to claim 1, it is characterised in that: the end face of described auxiliary oil circuit spout (3) and working connection spout (4) is respectively arranged with the tangential oil input channel of auxiliary oil circuit spout (9) and the tangential oil input channel of working connection spout (14).
- A kind of wide scope fuel nozzle structure being applicable to aloft work the most according to claim 2, it is characterised in that: the height of the tangential oil input channel of the auxiliary oil circuit spout (9) of described auxiliary oil circuit spout (3) end face is 0.2～0.4mm.
- A kind of wide scope fuel nozzle structure being applicable to aloft work the most according to claim 1, it is characterised in that: in the spin chamber that described auxiliary oil circuit spout (3) inner chamber is formed, coning angle (8) is 30 °.
- A kind of wide scope fuel nozzle structure being applicable to aloft work the most according to claim 1, it is characterized in that: described auxiliary oil circuit spout (3) port of export is arranged to the auxiliary oil circuit spout outlet face of cylinder 10, and a diameter of 1.75mm on the auxiliary oil circuit spout outlet face of cylinder 10.
- A kind of wide scope fuel nozzle structure being applicable to aloft work the most according to claim 5, it is characterised in that: the port of export on the described auxiliary oil circuit spout outlet face of cylinder 10 is arranged to the auxiliary oil circuit spout outlet conical surface 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620451827.9U CN205619380U (en) | 2016-05-18 | 2016-05-18 | Wide region fuel nozzle structure suitable for high altitude work |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620451827.9U CN205619380U (en) | 2016-05-18 | 2016-05-18 | Wide region fuel nozzle structure suitable for high altitude work |
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| CN205619380U true CN205619380U (en) | 2016-10-05 |
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| CN201620451827.9U Active CN205619380U (en) | 2016-05-18 | 2016-05-18 | Wide region fuel nozzle structure suitable for high altitude work |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783032A (en) * | 2016-05-18 | 2016-07-20 | 贵州航空发动机研究所 | Wide-range fuel oil nozzle suitable for overhead work |
| CN107975428A (en) * | 2017-11-23 | 2018-05-01 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of double oil circuit swirl atomizer auxiliary oil circuit structures |
| CN109140502A (en) * | 2017-06-28 | 2019-01-04 | 中国航发贵阳发动机设计研究所 | A kind of built-in fuel manifold for conveying and being atomized for double oil circuits fuel oil |
| CN109519315A (en) * | 2018-10-16 | 2019-03-26 | 安徽省飞腾航空科技有限公司 | A kind of light aircraft two stroke engine atomizer and its working method |
-
2016
- 2016-05-18 CN CN201620451827.9U patent/CN205619380U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783032A (en) * | 2016-05-18 | 2016-07-20 | 贵州航空发动机研究所 | Wide-range fuel oil nozzle suitable for overhead work |
| CN109140502A (en) * | 2017-06-28 | 2019-01-04 | 中国航发贵阳发动机设计研究所 | A kind of built-in fuel manifold for conveying and being atomized for double oil circuits fuel oil |
| CN107975428A (en) * | 2017-11-23 | 2018-05-01 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of double oil circuit swirl atomizer auxiliary oil circuit structures |
| CN109519315A (en) * | 2018-10-16 | 2019-03-26 | 安徽省飞腾航空科技有限公司 | A kind of light aircraft two stroke engine atomizer and its working method |
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Address after: 550000 No. 602, Yuntan North Road, guanshanhu District, Guiyang City, Guizhou Province Patentee after: AVIC GUIZHOU ENGINE DESIGN INSTITUTE Address before: 550000 No. 602, Yuntan North Road, Jinyang New District, Guiyang City, Guizhou Province Patentee before: GUIZHOU AERONAUTICAL ENGINE INSTITUTE |