CN109973244A - From driving by-pass air duct to change shape flabellum compression set - Google Patents

From driving by-pass air duct to change shape flabellum compression set Download PDF

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Publication number
CN109973244A
CN109973244A CN201910391377.7A CN201910391377A CN109973244A CN 109973244 A CN109973244 A CN 109973244A CN 201910391377 A CN201910391377 A CN 201910391377A CN 109973244 A CN109973244 A CN 109973244A
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CN
China
Prior art keywords
air duct
pass air
flabellum
rotating member
duct
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Granted
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CN201910391377.7A
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Chinese (zh)
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CN109973244B (en
Inventor
黄秀全
王丁喜
钱文韬
曹东明
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Northwestern Polytechnical University
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Northwestern Polytechnical University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02KJET-PROPULSION PLANTS
    • F02K3/00Plants including a gas turbine driving a compressor or a ducted fan
    • F02K3/02Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber
    • F02K3/04Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type
    • F02K3/072Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type with counter-rotating, e.g. fan rotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02KJET-PROPULSION PLANTS
    • F02K3/00Plants including a gas turbine driving a compressor or a ducted fan
    • F02K3/02Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber
    • F02K3/04Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type
    • F02K3/075Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type controlling flow ratio between flows
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02KJET-PROPULSION PLANTS
    • F02K3/00Plants including a gas turbine driving a compressor or a ducted fan
    • F02K3/02Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber
    • F02K3/04Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type
    • F02K3/077Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type the plant being of the multiple flow type, i.e. having three or more flows

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The device more particularly to fanjet by-pass air duct continuously adjusted the present invention relates to fanjet bypass ratio is to a turn fan ring compression set.It is a kind of to drive by-pass air duct to change shape flabellum compression set certainly, main duct including engine, being set to the duct on the outside of the main duct is third by-pass air duct, it is equipped in the inlet guide vane in third by-pass air duct and between stator blade two rows of to turning rotating member, two rows are respectively upstream rotating member and downstream rotating member to rotating member is turned, and upstream rotating member and downstream rotating member pass through turntable bearing respectively and be arranged on the duct casing of third by-pass air duct.Present invention employs two rows to turning fan ring structure, make third by-pass air duct pressure ratio and flow at identical conditions, the revolving speed of rotor structure is effectively reduced and reduces third by-pass air duct size, to reduce noise, power consumption and design difficulty, the working range for expanding turbofan significantly larger plays the change circulation advantage of this type of engine.

Description

From driving by-pass air duct to change shape flabellum compression set
Technical field
The device more particularly to fanjet by-pass air duct continuously adjusted the present invention relates to fanjet bypass ratio to turn Fan ring compression set.
Background technique
One Typical requirements of next-generation aviation gas turbine Duct-Burning Turbofan are to become circulation.Variable cycle engine is by changing Become geometry, size and the position of certain components and realize the change of the loop parameters such as pressure ratio, flow and bypass ratio, makes to send out Motivation has optimal performance under various working conditions, so that flying height and Mach number to aircraft etc. has good adaptation Property.
The U.S. patent Nos US4043121 of Thomas et al., topic are " birotor variable cycle engines ", are disclosed A kind of engine of band blade tip fan (Flade) controls air by adjusting the adjustable vane outside blade tip fan in duct Flow realizes the changeability of cycle of engine.
In United States Patent (USP) US005809772A, a kind of double outer culverts of band core engine driving fan (CDFS) configuration are disclosed Variable cycle engine.It is that fan is divided into front/rear two parts with the main distinction of the conventional single duct fanjet in structure, Leading portion fan is driven by low-pressure turbine shaft, and back segment fan is connected in high-pressure shaft, and back segment fan is core engine driving fan, preceding/ Rear fan respectively has a by-pass air duct.Pass through the preposition area of duct after the model selection valve and CDFS in duct after leading portion fan Adjustable injector (VABI), which is adjusted, makes engine all have optimal bypass ratio in wide working range.
In United States Patent (USP) US20100180572A1, discloses while containing turbofan outside three with CDFS and Flade configuration Engine, contain outside third in blade tip fan by the direct-connected driving of main duct fan blade, configure in motor head.Chinese patent CN1619129A discloses the engine of tail Flade blade tip fan, wherein Flade blade tip fan and low-pressure turbine movable vane or The connection of free turbine blade, configures in engine rear end.Contain turbofan outside this type three also referred to as adaptively to follow Ring engine or intelligent engine.Increased third by-pass air duct, the flow path not only may be used on the basis of double outer culvert variable cycle engines To increase the bypass ratio adjustable range of engine, optimize the flow matches of air inlet/engine, it may also be used for high energy weapon heat pipe The effects of managing and be stealthy.
Since by-pass air duct Flade blade tip fan and inner duct blade use direct-connected mode, designs and bring for engine It is many unfavorable: one is blade strength difficult design, limits the tangential velocity selection of blade;The second is being of coupled connections makes to control System is more complicated, and the freedom degree of adjusting becomes smaller, and is unfavorable for the expansion of engine working range;The third is the performance of each duct is not It can take into account, significantly limit more duct engines and play change circulation advantage.
Summary of the invention
It is a kind of using rotor and to a turn fan rotor it is an object of the invention to avoid the deficiencies in the prior art from providing Blade integrated design, compact-sized, controlling mechanism independently, with main duct system mechanics decouples, and adjusts the big electricity of freedom degree The by-pass air duct of Magnetic driving is to change shape flabellum compressibility.
To achieve the above object, the technical scheme adopted by the invention is as follows: it is a kind of from driving by-pass air duct to change shape flabellum pressure Compression apparatus, the main duct including engine, the duct being set on the outside of the main duct is third by-pass air duct, in third by-pass air duct Two rows are equipped between interior inlet guide vane and stator blade to rotating member is turned, two rows are respectively upstream to rotating member is turned Rotating member and downstream rotating member, upstream rotating member and downstream rotating member are arranged outside third by turntable bearing respectively On the duct casing of duct.
Further, it is described it is two rows of include upstream flabellum and downstream flabellum to rotating member is turned, upstream flabellum and downstream Flabellum is separately positioned on two ring holder inner walls, and the ring holder has inside and outside wall, outside ring holder Wall is equipped with calutron;Ring holder is arranged on the outer casing of third by-pass air duct by a pair of of turntable bearing, and described Motor stator is additionally provided on the corresponding outer casing of calutron;The magnetic pole of the calutron and motor stator circumferentially array Arrangement, calutron are opposite with the polarity of motor stator.The rotation that the upstream flabellum and ring holder, calutron form Component is upstream rotating member, and the rotating member that the downstream flabellum and ring holder, calutron form is downstream rotation Component.
Further, the bearing clearance of the turntable bearing is less than tip clearance, and tip clearance refers to upstream flabellum under Swim the interior casing gap of flabellum and third by-pass air duct.
Further, it is described it is two rows of include upstream flabellum and downstream flabellum to rotating member is turned, upstream flabellum and downstream Flabellum is separately positioned on two ring holder outer walls, and the ring holder has inside and outside wall, in ring holder Wall is equipped with calutron;Ring holder is arranged on the interior casing of third by-pass air duct by a pair of of turntable bearing, and described It is additionally provided with motor stator on the corresponding interior casing of calutron, the magnetic pole of the calutron and motor stator circumferentially array Arrangement, calutron are opposite with the polarity of motor stator.The rotation that the upstream flabellum and ring holder, calutron form Component is upstream rotating member, and the rotating member that the downstream flabellum and ring holder, calutron form is downstream rotation Component.
Further, the bearing clearance of the turntable bearing is less than tip clearance, and tip clearance refers to upstream flabellum under Swim the outer casing gap of flabellum and third by-pass air duct.
Further, the calutron is permanent magnet or motor-spin-coil.
Further, the turntable bearing is cylinder roller bearing.
Further, guide vane cooperation is two rows of to the progress setting angle adjustment of rotating member revolving speed is turned, and makes institute The upstream flabellum for stating upstream rotating member obtains the optimal incoming flow angle of attack.
Further, described to be equipped with comb tooth to the gap turned between rotating member and casing, labyrinth gas seals reduce air Leakage flow.
Further, the flow of the third by-pass air duct changes in the range of 0~60% complete machine flow;The third When outer culvert flow is 0, contains outside third and be in close state, aircraft is in supersonic cruising or maneuvering condition at this time;When outside third When culvert flow is 60% complete machine flow, engine is in the state of big bypass ratio, i.e. aircraft is in subsonics cruising condition.In reality In-flight, flow can be contained outside third by adjusting come so that engine meets working performance requirement.
The beneficial effects of the present invention are: present invention employs two rows to fan ring structure is turned, third by-pass air duct pressure ratio can be made At identical conditions with flow, be effectively reduced rotor structure revolving speed and reduce third by-pass air duct size, thus reduce noise, Power consumption and design difficulty.Third by-pass air duct can be improved under identical revolving speed to the fan ring structure turned using two rows Pressure ratio and flow, and downstream is made, closer to axial direction, circumferential direction to be effectively reduced to the flow angle rotated at means outlet Speed, it might even be possible to cancelling guide vane.
It is different from traditional by-pass air duct Flade blade tip fan, present invention employs rotor and to a turn fan ring flabellum one Bodyization design forms by-pass air duct that translator independently drives to a fan ring compressibility is turned, and has that compact-sized, controlling mechanism is only The features such as vertical, with the decoupling of main duct system mechanics, can be realized continuously adjusting on a large scale for engine bypass ratio, effectively optimization hair The matching of motivation and air intake duct reduces or even eliminates spillage drag, expands the working range of turbofan significantly, is applicable in In performance requirement is high, working range is wide, more duct fan gas turbine engines more than operating mode, becomes circulating gas turbine wind Fan engine, adaptive cycle engine and intelligent engine can larger play the change circulation advantage of this type of engine.
The present invention realizes individual motor driving, so that controlling mechanism is independent, has bigger adjusting freedom degree;In not increasing The design difficulty of duct blade;It can be configured at the axially different position in by-pass air duct according to the topology layout feature of engine, it is real Existing structural layout optimization.Meanwhile multiple-working mode selection is realized, it can satisfy aircraft and add in subsonic speed cruise, transonic speed To engine high performance requirements under the multi-states such as speed and supersonic cruising.In low power states such as aircraft subsonic speed cruises, start Machine model selection valve and front/rear adjustable area culvert channel injector are opened, and third by-pass air duct works in high revolving speed fan ring is turned Operating condition, engine are run with big bypass ratio state, and engine propulsive efficiency is higher at this time, fuel consumption rate is lower.It is climbed in aircraft Under the high power operating condition of liter, acceleration and supersonic flight, engine turns down each VABI, and more air is promoted to enter core engine Interior, adaptive cycle engine operates in thrust priority status.
Detailed description of the invention
Fig. 1 is that have adaptive variable cycle engine general structure schematic diagram of the invention;
Fig. 2 is the front enlarged structure schematic diagram of engine overall structure in Fig. 1;
Fig. 3 is the rear portion enlarged structure schematic diagram of engine overall structure in Fig. 1;
Fig. 4 is the structural schematic diagram of the embodiment of the present invention 1;
Fig. 5 is the composed structure schematic diagram of ring holder, flabellum and calutron in embodiment 1;
Fig. 6 is the structural schematic diagram of the embodiment of the present invention 2;
Fig. 7 is the composed structure schematic diagram of ring holder, flabellum and calutron in embodiment 2.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and It is non-to be used to limit the scope of the invention.
Embodiment 1: as shown in figure 1, figure 2, figure 3, figure 4 and figure 5, a kind of to be filled from driving by-pass air duct annular to flabellum compression is turned It sets, is equipped with inside, centre, three, outside runner at 12 rear portion of conventional fan, interior side runner is connected with core engine driving fan 13 Logical, intermediate flow channel is connected with the entrance of the second by-pass air duct 14, and outer side runner is connected with the entrance of the first by-pass air duct 8, and second The outlet of by-pass air duct 14 is connected by preceding variable area culvert channel injector 9 with the first by-pass air duct 8, in entering for the first by-pass air duct 8 Model selection valve 6 is additionally provided at mouthful;13 rear portion of core engine driving fan be the inside, two, outside annular channel, The interior annular runner is connected with high-pressure compressor 15, and the intermediate annular runner is connected with the second by-pass air duct 14 It is logical, it is sequentially communicated at 15 rear portion of high-pressure compressor equipped with combustion chamber 10, high-pressure turbine 16, low-pressure turbine 17;Outside described second The exit of duct 14, as engine tail portion, are equipped with inside and outside two runners, and inner flow passage passes through rear variable area duct injection Device 11 is connected with the outlet of main duct, and outer flow passage is connected with the outlet of third by-pass air duct 7.Third by-pass air duct 7 is arranged in institute The outside for stating main duct is equipped with two rows of to rotating between the inlet guide vane 1 in third by-pass air duct 7 and stator blade 5 Component, two rows of is respectively upstream rotating member and downstream rotating member to rotating member is turned, and upstream rotating member and downstream rotate Component passes through turntable bearing 20 respectively and is arranged on the duct casing of third by-pass air duct 7.
It is described it is two rows of include upstream flabellum 4 and downstream flabellum 21 to rotating member is turned, upstream flabellum 4 and downstream flabellum 21 It is separately positioned on two 18 inner walls of ring holder, the ring holder 18 has inside and outside wall, in ring holder 18 Outer wall is equipped with calutron 19;Ring holder is arranged on the outer casing of third by-pass air duct 7 by a pair of of turntable bearing, with Motor stator 3 is additionally provided on the corresponding outer casing of the calutron;The equal edge of magnetic pole of the calutron 19 and motor stator 3 Circumferential array arrangement, calutron 19 are opposite with the polarity of motor stator 3.The calutron 19 is that permanent magnet or motor turn Subcoil.The bearing clearance of the turntable bearing 20 is less than tip clearance, and tip clearance refers to upstream flabellum 4 and downstream flabellum 21 With the interior casing gap of third by-pass air duct 7.The guide vane 1 cooperates two rows to carry out setting angle to rotating member revolving speed is turned Adjustment, makes the upstream flabellum 4 of the upstream rotating member obtain the optimal incoming flow angle of attack.
Described is equipped with comb tooth to the gap turned between rotating member and casing, and labyrinth gas seals reduce air leakage flow. The flow of the third by-pass air duct 7 changes in the range of 0~60% complete machine flow;When culvert flow is 0 outside the third, the Contain outside three and be in close state, aircraft is in supersonic cruising or maneuvering condition at this time, compared with double duct engine operations State;When containing flow outside third is 60% complete machine flow, engine is in the state of big bypass ratio, i.e. aircraft is patrolled in subsonics Boat state.In practical flight, flow can be contained outside third by adjusting come so that engine meets working performance requirement.
Embodiment 2: it is as shown in Figure 6, Figure 7, same as Example 1, unlike: it is described two rows of to turning rotating member packet Upstream flabellum 4 and downstream flabellum 21 are included, upstream flabellum 4 and downstream flabellum 21 are separately positioned on two 18 outer walls of ring holder On, the ring holder 18 has inside and outside wall, and calutron 19 is equipped on 18 inner wall of ring holder;Annular brace Frame 18 passes through a pair of of turntable bearing 20 and is arranged on the interior casing of third by-pass air duct 7, interior casing corresponding with the calutron On be additionally provided with motor stator 3, the magnetic pole of the calutron 19 and motor stator 3 circumferentially array arrangement, calutron 19 It is opposite with the polarity of motor stator 3.The bearing clearance of the turntable bearing be less than tip clearance, tip clearance refer to flabellum 4 with The outer casing gap of third by-pass air duct 7.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of by-pass air duct of driving certainly is to change shape flabellum compression set, which is characterized in that the main duct including engine, setting Duct on the outside of the main duct is third by-pass air duct, in the inlet guide vane in third by-pass air duct and between stator blade Equipped with two rows to rotating member is turned, two rows of is respectively upstream rotating member and downstream rotating member, upstream rotation to rotating member is turned Turn component and downstream rotating member passes through turntable bearing respectively and is arranged on the duct casing of third by-pass air duct.
2. the by-pass air duct of driving certainly as described in claim 1 is to change shape flabellum compression set, which is characterized in that the two rows It include upstream flabellum and downstream flabellum to rotating member is turned, upstream flabellum and downstream flabellum are separately positioned on two ring holders On inner wall, the ring holder has inside and outside wall, and calutron is equipped on ring holder outer wall;Ring holder It is arranged on the outer casing of third by-pass air duct by a pair of of turntable bearing, is additionally provided on outer casing corresponding with the calutron Motor stator;The magnetic pole of the calutron and motor stator circumferentially array arrangement, the pole of calutron and motor stator Property is opposite.
3. the by-pass air duct of driving certainly as claimed in claim 2 is to change shape flabellum compression set, which is characterized in that the turntable The bearing clearance of bearing is less than tip clearance, and tip clearance refers between upstream flabellum and downstream flabellum and the interior casing of third by-pass air duct Gap.
4. the by-pass air duct of driving certainly as described in claim 1 is to change shape flabellum compression set, which is characterized in that the two rows It include upstream flabellum and downstream flabellum to rotating member is turned, upstream flabellum and downstream flabellum are separately positioned on two ring holders On outer wall, the ring holder has inside and outside wall, and calutron is equipped on ring holder inner wall;Ring holder It is arranged on the interior casing of third by-pass air duct by a pair of of turntable bearing, is additionally provided on interior casing corresponding with the calutron Motor stator, the magnetic pole of the calutron and motor stator circumferentially array arrangement, the pole of calutron and motor stator Property is opposite.
5. the by-pass air duct of driving certainly as claimed in claim 4 is to change shape flabellum compression set, which is characterized in that the turntable The bearing clearance of bearing is less than tip clearance, and tip clearance refers between upstream flabellum and downstream flabellum and the outer casing of third by-pass air duct Gap.
6. the by-pass air duct of driving certainly as described in claim 2 to 5 is any is to change shape flabellum compression set, which is characterized in that institute The calutron stated is permanent magnet or motor-spin-coil.
7. the by-pass air duct of driving certainly as described in claim 2 to 5 is any is to change shape flabellum compression set, which is characterized in that institute The turntable bearing stated is cylinder roller bearing.
8. the by-pass air duct of driving certainly as described in claim 2 to 5 is any is to change shape flabellum compression set, which is characterized in that institute The guide vane cooperation stated is two rows of to the progress setting angle adjustment of rotating member revolving speed is turned, and makes the upstream of the upstream rotating member Flabellum obtains the optimal incoming flow angle of attack.
9. it is as described in claim 1 from driving by-pass air duct to change shape flabellum compression set, which is characterized in that it is described to turning Gap between rotating member and casing is equipped with comb tooth, and labyrinth gas seals reduce air leakage flow.
10. the by-pass air duct of driving certainly as described in claim 1,2,3,4,5,9 is any is to change shape flabellum compression set, feature It is, the flow of the third by-pass air duct changes in the range of 0~60% complete machine flow;Containing flow outside the third is 0 When, third is contained outside to be in close state, and aircraft is in supersonic cruising or maneuvering condition at this time;It is 60% when containing flow outside third When complete machine flow, engine is in the state of big bypass ratio, i.e. aircraft is in subsonics cruising condition.
CN201910391377.7A 2019-05-12 2019-05-12 Self-driven outer duct counter-rotating annular fan blade compression device Active CN109973244B (en)

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CN111237084A (en) * 2020-02-17 2020-06-05 王镇辉 Electric-driven jet aircraft engine and aircraft
CN111561392A (en) * 2020-05-11 2020-08-21 中国航发沈阳发动机研究所 Intermediary cartridge receiver structure
CN111594316A (en) * 2020-05-11 2020-08-28 中国航发沈阳发动机研究所 Intermediary cartridge receiver assembly
CN112583200A (en) * 2020-11-19 2021-03-30 浙江京惠机电有限公司 Rotor and fan blade integrated structure of outer rotor motor
CN113565649A (en) * 2021-08-16 2021-10-29 中国科学院工程热物理研究所 Three-duct ACE engine with Flade fan and core machine driving fan stages
CN114087088A (en) * 2020-08-24 2022-02-25 中国航发商用航空发动机有限责任公司 Aeroengine test casing and aeroengine test system

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