CN202954883U - Fuel oil flow pulsation control device - Google Patents
Fuel oil flow pulsation control device Download PDFInfo
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- CN202954883U CN202954883U CN 201220614752 CN201220614752U CN202954883U CN 202954883 U CN202954883 U CN 202954883U CN 201220614752 CN201220614752 CN 201220614752 CN 201220614752 U CN201220614752 U CN 201220614752U CN 202954883 U CN202954883 U CN 202954883U
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- vibrator
- fuel
- control device
- processing unit
- fuel pipe
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Abstract
The utility model relates to a fuel oil flow pulsation control device which comprises a flow sensor, a vibrator, and a signal collection and processing unit, wherein the flow sensor and the vibrator are arranged in a fuel oil pipe, and the signal collection and processing unit is connected with the flow sensor and the vibrator. The signal collection and processing unit receives a pressure pulsation signal in the fuel oil pipe from the flow sensor, amplitude, a phase position and oscillation angle frequency of the position of the vibrator are estimated according to the pressure pulsation signal, and the vibrator is driven to send out a vibration signal which is the same with estimated amplitude and oscillation angle frequency, and opposite to the phase position. The flow sensor and the vibrator are arranged on the position, close to the upstream, of the fuel oil pipe, by adoption of an active control mode, the pressure pulsation signal of the position of the flow sensor is monitored in real time, and the vibrator sends out specific frequency and amplitude sound wave in the fuel oil pipe, so that flow pulsation is restrained, and fuel oil amount and gas-oil ratio do not produce large pulsation when the fuel oil is sprayed into a combustion chamber.
Description
Technical field
The utility model relates to gas turbine fuel pipe technology, relates in particular to a kind of fuel flow ripple control device.
Background technique
Hugging is that non-smooth combustion heat release and pressure pulsation intercouple and causes the process of system oscillation, and it finally shows as high-intensity pressure oscillation in the firing chamber.Oscilatory occurrence is prevalent in all types of industries and advancing means, boiler for example, gas turbine, rocket etc.
For aeroengine, though traditional diffusion combustion mode has preferably combustion stability, it produces a large amount of NOx can't satisfy in the world day by day harsh disposal of pollutants demand.Although and emerging premixed combustion mode can be controlled the NOx generation preferably, is faced with serious hugging problem.The pressure and the velocity fluctuation that are brought by rough burning can cause significant damage to firing chamber and even whole system: high-intensity pressure oscillation meeting applies additional vibratory to combustion chamber wall surface, thereby combustion chamber components is damaged.In addition, follow rough burning and the heat release non-uniform phenomenon that comes, then can cause regional area overheated the firing chamber in, produces so-called " hot spot ", thus the possibility of increase generation NOx and CO.
The factor that affects combustion instability mainly is the oil-gas ratio vibration, and the fuel flow pulsation in the fuel line then is to cause one of key factor of oil-gas ratio vibration, and present industrial quarters also lacks the braking measure to the pulsation of the fuel flow in the fuel pipe.
The model utility content
The purpose of this utility model is to propose a kind of fuel flow ripple control device, can suppress the fuel flow pulsation in the fuel pipe, to improve the combustion stability in the firing chamber.
For achieving the above object, the utility model provides a kind of fuel flow ripple control device, comprise: flow transducer, vibrator and signals collecting and processing unit, described flow transducer and vibrator are arranged in the fuel pipe, described signals collecting and processing unit link to each other with vibrator with described flow transducer respectively, described signals collecting and processing unit receive pressure fluctuation signal in the described fuel pipe from described flow transducer, estimate the amplitude of described vibrator position according to described pressure fluctuation signal, phase place and hunting angle frequency, and drive described vibrator and send identical with the amplitude of estimating, the hunting angle frequency is identical, and the oscillating signal of single spin-echo.
Further, also comprise eliminating the vibration canceller of the influence of vibration that described vibrator sends, described vibration canceller is arranged on the outside of described fuel pipe.
Further, also comprise near the pressure transducer of fuel nozzle that is arranged on described fuel pipe in the burning chamber, described pressure transducer links to each other with described signals collecting and processing unit, and the pressure fluctuation signal that described signals collecting and processing unit feed back according to described pressure transducer is finely tuned phase place and the amplitude of the oscillating signal that drives described vibrator and send.
Further, described vibrator is loudspeaker class vibrator.
Further, described vibration canceller is the Sound damping cover that is set in described fuel pipe outer surface.
Further, described Sound damping cover adopts muffler material to make, and comprise straight tube structure part and U-shaped structure division, described vibrator is located at the inside of described fuel pipe and the position of described straight tube structure structural correspondence, and described U-shaped structure division is in the downstream of the above straight tube structure part of fuel flow direction.
Further, described muffler material is that the crest noise elimination is cotton.
Further, described loudspeaker class vibrator is piezoelectric constant minisize acoustic generator.
Further, also comprise the power amplifier that is arranged between described vibrator and signals collecting and the processing unit.
Further, described signals collecting and processing unit can be according to amplitude, phase place and the hunting angle frequencies of the pressure fluctuation signal of described flow transducer position and the described vibrator of the distance estimations position between described flow transducer and the described vibrator, perhaps directly with the pressure fluctuation signal of the described flow transducer position estimated value as amplitude, phase place and the hunting angle frequency of described vibrator position.
Based on technique scheme, the utility model position of top trip in fuel pipe arranges flow transducer and vibrator, adopt the ACTIVE CONTROL mode, pressure fluctuation signal by Real-Time Monitoring flow transducer position, in fuel pipe, send the sound wave of characteristic frequency and amplitude by vibrator, suppress flow pulsation, amount of fuel and oil-gas ratio do not produce larger pulsation when guaranteeing that fuel oil sprays into the firing chamber.
In another embodiment, also comprise eliminating the vibration canceller of the influence of vibration that described vibrator sends, described vibration canceller is arranged on the outside of described fuel pipe.The influence of vibration that produces for fear of vibrator can utilize the vibration canceller that is located at the fuel pipe outside to eliminate unnecessary vibration near other devices the fuel pipe.
In another embodiment, also comprise near the pressure transducer of fuel nozzle that is arranged on described fuel pipe in the burning chamber, described pressure transducer links to each other with described signals collecting and processing unit, and the pressure fluctuation signal that described signals collecting and processing unit feed back according to described pressure transducer is finely tuned phase place and the amplitude of the oscillating signal that drives described vibrator and send.In fact what increase that pressure transducer can be real-time recognizes after vibrator sends oscillating signal impact near the fuel pressure the fuel nozzle, and can with this basis as feedback control, can obtain more effective, more accurate fuel flow pulsation inhibition by feedback control.
In another embodiment, described vibrator is loudspeaker class vibrator, and is designed to fuel pipe downstream direction propagation sound wave.Because the fuel flow in the fuel pipe and the frequency of pressure pulsation are higher, usually more than 100Hz, therefore select loudspeaker class vibrator all very suitable on frequency range, volume and adjustability.
In another embodiment, described vibration canceller is the Sound damping cover that is set in described fuel pipe outer surface.The sound wave that Sound damping cover can make loudspeaker class vibrator produce is easier to be eliminated and to absorb, and has avoided the impact of sound wave near other devices the fuel pipe.
In another embodiment, described Sound damping cover adopts muffler material to make, and comprise straight tube structure part and U-shaped structure division, described vibrator is located at the position corresponding with described straight tube structure part, inside of described fuel pipe, and be designed to fuel pipe downstream direction propagation sound wave, described U-shaped structure division is in the downstream of the above straight tube structure part of fuel flow direction.Can control the direction that vibration is transmitted at the directed sound wave that the straight-tube portion vibrator sends, and vibration can by straight tube structure part and the easier absorption of U-shaped structure division, be avoided on the impact of sound wave near other devices the fuel pipe.And the position corresponding with described straight tube structure, the inside that vibrator is located at described fuel pipe, and be designed to fuel pipe downstream direction propagation sound wave, so also so that new pulsation influence factor is caused in the upstream that the vibration that vibrator produces is not transmitted the oil pipe that strile-backs as far as possible.The U-shaped structure division can make vibration guarantee to dissipate in fuel pipe, so that this vibration is unlikely to be delivered to the downstream nozzle position, and fuel flow and the pressure at this place is caused the pulsation impact.
In another embodiment, also comprise the power amplifier that is arranged between described vibrator and signals collecting and the processing unit.Can obtain the acoustic vibration power of needs by power amplifier.
In another embodiment, described signals collecting and processing unit can be according to amplitude, phase place and the hunting angle frequencies of the pressure fluctuation signal of described flow transducer position and the described vibrator of the distance estimations position between described flow transducer and the described vibrator, perhaps directly with the pressure fluctuation signal of the described flow transducer position estimated value as amplitude, phase place and the hunting angle frequency of described vibrator position.In the amplitude of calculating the vibrator position, when phase place and hunting angle frequency, can the Elastic Vibration device and flow transducer between actual distance, can be according to the amplitude of flow transducer position according to its actual distance, phase place and hunting angle frequency estimate the amplitude of vibrator position, phase place and hunting angle frequency, if and the wavelength of pulsation is greater than the actual distance between vibrator and the flow transducer more than 3 times the time, just need not to calculate both phase differences, can be directly with the pressure fluctuation signal of the flow transducer position amplitude as the vibrator position, the estimated value of phase place and hunting angle frequency.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, consists of the application's a part, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is an embodiment's of the utility model fuel flow ripple control device structural representation.
Fig. 2 is another embodiment's of the utility model fuel flow ripple control device structural representation.
Embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
At first the upstream and downstream of fuel pipe and the pulsation impact of nozzle system are analyzed.The fuel flow of fuel pipe of flowing through mainly is subject to the pressure influence of firing chamber cavity pressure and fuel pipe upstream, can be expressed as:
C wherein
dBe flow coefficient, A is the fuel pipe sectional area, and ρ is fuel density, p
3And p
5Be respectively fuel pipe upstream fuel injection pressure and burning chamber internal combustion oil nozzle place pressure.As firing chamber cavity pressure p
5When producing vibration, p
3Also can fluctuate thereupon, fuel flow is changed.p
3And p
5Can be expressed as respectively:
p
5=A
5sinωt
p
3=A
3sin[ω(t+τ)]
Wherein, ω represents the hunting angle frequency, and τ represents p
3Relative p
5Retard time, A3 is fuel pressure pulsation amplitude when also untreated, amplitude is larger.A5 is the pulsation amplitude after suppressing to process through pulsation, the i.e. amplitude of pressure fluctuation of nozzle exit.
The fuel delivery and the ejecting system that are communicated with for the firing chamber cavity three by fuel pump, fuel pipe itself and the fuel pipe jet expansion of fuel pipe upstream, because the relation that the three is communicated with, so three's unstable pulsation and oscillatory occurences separately also intercouples.Such as during as a System Operation, change has occured suddenly in the fuel flow of supplying when fuel pump this three, and the flow in the fuel pipe also can change so, and the thing followed is that the pressure of nozzle exit changes; And when the burning thermal discharge in the burning chamber of nozzle exit changes suddenly, the gas pressure of nozzle exit also can change so, this pressure variation meeting is passed to the fuel pump of upstream by nozzle and fuel pipe one tunnel, so that change has also occured the fuel flow that fuel pump is supplied with.In true function situation, the variation of these two Different Effects directions exists constantly, so just produced the pulsation of nozzle place outlet pressure and the pulsation of the interior flow of fuel pipe, the pulsation that fuel pipe oils by (oil pump) and downstream (jet expansion) produces interacts also to be affected.Along with time history, can become rule gradually and finally reach the state of a steady pulsation of the pulsation of upstream and downstream, the pressure of upstream and downstream all can present the form of similar sine wave at this moment, the namely pulsation of the P3(fuel pump charge oil pressure described in the formula) and the pressure pulsation of P5(fuel pipe nozzle exit).
Based on above-mentioned analysis, can find out if pulsation intervention of fuel pipe upstream can be impacted the pulsation of nozzle outlet pressure, in order to reach the flow pulsation inhibition of expection.
As shown in Figure 1, be an embodiment's of the utility model fuel flow ripple control device structural representation.In the present embodiment, fuel flow ripple control device comprises: flow transducer 3, vibrator 4 and signals collecting and processing unit 7, flow transducer 3 and vibrator 4 are arranged in the fuel pipe 1, signals collecting and processing unit 7 link to each other with vibrator 4 with flow transducer 3 respectively, the pressure fluctuation signal that signals collecting and processing unit 7 receive in the fuel pipe from flow transducer 3, estimate the amplitude of vibrator 4 positions according to this pressure fluctuation signal, phase place and hunting angle frequency, and driving vibrator 4 sends identical with the amplitude of estimating, the hunting angle frequency is identical, and the oscillating signal of single spin-echo.Utilize this oscillating signal to come reduce fuel oil flow pulsation, guarantee that fuel oil amount of fuel and oil-gas ratio when spraying into the firing chamber do not produce larger pulsation.
In technique scheme, the pulsation that utilizes vibrator to offset in the fuel pipe is a kind of mode of ACTIVE CONTROL, and this mode can be tackled the fuel flow pulsation of different frequency and amplitude characteristic, has very strong adaptability.
In the selection of vibrator, consider that flow and the fluctuating frequency of pressure in the fuel pipe are higher, usually more than 100Hz, therefore preferred vibration frequency range, the proper loudspeaker class vibrator of volume and adjustability aspect, at first its attainable vibration frequency range ratio is easier to reach more than the 100Hz, and the loudspeaker volume is less, and the frequency of its sound wave that sends, amplitude and phase place are all regulated than being easier to.Other vibrator also can be considered to select, such as vibrating plate etc.In addition, therefore vibrator should possess grease proofing feature owing to be immersed in the fuel oil.
Adopted after the vibrator, the vibration that vibrator sends can be offset the pulsation of the fuel oil in the fuel pipe, suppress to be delivered to the fuel flow pulsation in the firing chamber, but this oscillating signal also may be further causes adverse effect to the fuel oil of the fuel nozzle position near other devices the fuel pipe and downstream, therefore preferably at the outer installment vibration canceller of fuel pipe, be used for eliminating the influence of vibration that vibrator sends.Certainly, if do not have what other device near the fuel pipe or be difficult for being affected, and fuel pipe have enough apart from the time vibration before arriving fuel nozzle, dissipate, also the vibration canceller can be set.
When selecting loudspeaker class vibrator (such as piezoelectric constant minisize acoustic generator etc.), preferred vibrator canceller is the Sound damping cover 2 that is set in the fuel pipe outer surface.Sound damping cover 2 can adopt muffler material (it is cotton etc. to eliminate the noise such as crest, is convenient to moulding and dismounting) to make, and can guarantee that sound wave is limited in the fuel pipe, is unlikely to miscellaneous part and oil-way system are impacted.
Sound damping cover 2 can comprise straight tube structure part and U-shaped structure division, and vibrator 4 can be located at the position corresponding with the straight tube structure part, inside of fuel pipe 1, and is designed to fuel pipe downstream direction propagation sound wave.So just can so that sound wave be limited in the fuel pipe, can not penetrate the fuel oil tube wall, and direction propagation sound wave downstream, in the time of also can avoiding sound wave upstream to propagate the upstream fuel pump is caused the pulsation impact, and that this impact may be controlled system signal is unfavorable.Certainly, if this impact is not remarkable, also can adopt nondirectional loudspeaker class vibrator.
The U-shaped structure division is in the downstream of straight tube structure part on the fuel flow direction, can absorb the sound wave that loudspeaker class vibrator sends, so that sound wave can be guaranteed to dissipate before fuel jet, avoids Secondary Disturbance is caused in the right firing chamber of fuel nozzle.It should be noted that and be not only the U-shaped structure division, other shape such as S shape structure etc. also can be used as the part of Sound damping cover, as long as it can assist the dissipation of sound wave.
Dimensionally, consider that too short Sound damping cover length then possibly can't be eliminated pulsation fully and possibly can't guarantee that sound wave is limited in the fuel pipe, therefore the length of the straight tube structure of Sound damping cover part can be installed required space and is made as more than the 10cm based on the wavelength of fuel oil velocity fluctuation and fuel pipe, and the diameter of U-shaped structure division can be made as less than 1/2nd of the length of straight tube structure part.
Between vibrator 4 and signals collecting and processing unit 7, power amplifier 6 can also be set, can the signal that signals collecting and processing unit 7 send be amplified, so that loudspeaker class vibrator obtains the command signal that can work.And power amplifier 6 and signals collecting and processing unit 7 can be integrated into a device.
The working procedure of present embodiment is: fuel oil enters fuel pipe under the pressure that fuel pump produces, the flow transducer that is arranged in the fuel pipe records the pressure fluctuation signal of this position, and pass to signals collecting and processing unit, signals collecting and processing unit are estimated amplitude, phase place and the hunting angle frequency of vibrator position according to this pressure fluctuation signal, and send command signal to vibrator, drive vibrator send identical with the amplitude of estimating, the hunting angle frequency is identical, and the oscillating signal of single spin-echo.This oscillating signal is constantly offset with the fuel oil pulsation in propagation process, and has dissipated gradually before fuel nozzle, and the fuel oil that has so just reduced in the fuel pipe is pulsed, and fuel oil in fuel nozzle enters into the firing chamber is pulsed suppressed.
Suppress in order more accurately and effective to pulse to the fuel oil in fuel nozzle enters into the firing chamber, can also increase the device of feedback control, namely near the fuel nozzle of burning chamber internal combustion oil pipe, pressure transducer 5 is set, specifically referring to embodiment illustrated in fig. 2.This pressure transducer 5 links to each other with signals collecting and processing unit 7, and the pressure fluctuation signal that signals collecting and processing unit 7 can feed back according to pressure transducer 5 is finely tuned phase place and the amplitude of the oscillating signal that drives vibrator 4 and send.
When if pressure transducer 5 has still detected undesirable pressure pulsation, just need to adjust the oscillating signal that vibrator sends, the process of adjusting can be the process of a continuous iteration, for example in 0 to 360 phase angular region, adjust the phase place of loudspeaker class vibrator institute sounding wave, and by the continuous each pressure pulsation situation of adjusting position after the phase place of monitoring of pressure transducer 5, can make the pressure pulsation of this position reach minimum phase place until determine certain.Same, also can determine by the pulsation amplitude of continuous adjustment loudspeaker sound wave the amplitude of the pressure pulsation of this position of optimal inhibition.
When signals collecting and processing unit 7 carry out the estimation of amplitude, phase place and hunting angle frequency of vibrator position, because the pressure fluctuation signal that signals collecting and processing unit 7 receive is amplitude, phase place and the hunting angle frequency of flow transducer 3 positions, and the distance between the interior flow transducer 3 of fuel pipe and the vibrator 4 is known, just can go out by this range estimation time dependent pressure pulsation amplitude and frequency and the phase place of vibrator 4 positions.Here need should be mentioned that, because the wavelength of the pulsation of different frequency is different, when wavelength greater than 4 liang of flow transducer 3 and vibrators locate spacing more than 3 times the time, signals collecting and processing unit 7 just need not the phase difference between analysis stream quantity sensor 3 and the vibrator 4, signals collecting and processing unit 7 can be directly with the pressure fluctuation signal of the flow transducer 3 positions estimated value as amplitude, phase place and the hunting angle frequency of vibrator 4 positions.
By above-mentioned embodiment's explanation to the utility model fuel flow ripple control device, can see that the utility model possesses following advantage:
1, effectively reduce fuel oil flow pulsation, amount of fuel and oil-gas ratio do not produce larger pulsation when guaranteeing that fuel oil sprays into the firing chamber;
2, use the ACTIVE CONTROL mode, can tackle the fuel flow pulsation of different frequency and amplitude characteristic;
3, adopt U-shaped noise elimination sleeve pipe can guarantee that sound wave is limited in the fuel pipe, can not exert an influence to remaining part or oil-way system.Sound wave and fuel flow direction produce longitudinally mode of vibration along the fuel pipe straight tube in the same way, and U-shaped crook, sound wave will be absorbed gradually, thereby avoids the Sound damping cover fuel downstream to be subject to the Secondary Disturbance of sound wave.
4, the devices such as the collecting sensor signal in the utility model and control can be mutually integrated with whole motor health control or control system, meets following intelligent engine development trend.
Should be noted that at last: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characteristics is equal to replacement embodiment of the present utility model; And not breaking away from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technological scheme scope that the utility model asks for protection.
Claims (9)
1. fuel flow ripple control device, it is characterized in that, comprise: flow transducer, vibrator and signals collecting and processing unit, described flow transducer and vibrator are arranged in the fuel pipe, described signals collecting and processing unit link to each other with vibrator with described flow transducer respectively, described signals collecting and processing unit receive pressure fluctuation signal in the described fuel pipe from described flow transducer, estimate the amplitude of described vibrator position according to described pressure fluctuation signal, phase place and hunting angle frequency, and drive described vibrator and send identical with the amplitude of estimating, the hunting angle frequency is identical, and the oscillating signal of single spin-echo.
2. fuel flow ripple control device according to claim 1 is characterized in that, also comprises eliminating the vibration canceller of the influence of vibration that described vibrator sends, and described vibration canceller is arranged on the outside of described fuel pipe.
3. fuel flow ripple control device according to claim 1, it is characterized in that, also comprise near the pressure transducer of fuel nozzle that is arranged on described fuel pipe in the burning chamber, described pressure transducer links to each other with described signals collecting and processing unit, and the pressure fluctuation signal that described signals collecting and processing unit feed back according to described pressure transducer is finely tuned phase place and the amplitude of the oscillating signal that drives described vibrator and send.
4. fuel flow ripple control device according to claim 2 is characterized in that, described vibrator is loudspeaker class vibrator.
5. fuel flow ripple control device according to claim 4 is characterized in that, described vibration canceller is the Sound damping cover that is set in described fuel pipe outer surface.
6. fuel flow ripple control device according to claim 5, it is characterized in that, described Sound damping cover adopts muffler material to make, and comprise straight tube structure part and U-shaped structure division, described vibrator is located at the position corresponding with described straight tube structure part, inside of described fuel pipe, and be designed to fuel pipe downstream direction propagation sound wave, described U-shaped structure division is in the downstream of the above straight tube structure part of fuel flow direction.
7. fuel flow ripple control device according to claim 6 is characterized in that, described muffler material is that the crest noise elimination is cotton.
8. fuel flow ripple control device according to claim 4 is characterized in that, described loudspeaker class vibrator is piezoelectric constant minisize acoustic generator.
9. fuel flow ripple control device according to claim 4 is characterized in that, also comprises the power amplifier that is arranged between described vibrator and signals collecting and the processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220614752 CN202954883U (en) | 2012-11-20 | 2012-11-20 | Fuel oil flow pulsation control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220614752 CN202954883U (en) | 2012-11-20 | 2012-11-20 | Fuel oil flow pulsation control device |
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| CN202954883U true CN202954883U (en) | 2013-05-29 |
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| CN 201220614752 Expired - Lifetime CN202954883U (en) | 2012-11-20 | 2012-11-20 | Fuel oil flow pulsation control device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106523164A (en) * | 2016-12-08 | 2017-03-22 | 中国科学院工程热物理研究所 | Low-emission three-loop lean oil pre-mixing and active combustion control device and method |
| CN108870439A (en) * | 2018-07-27 | 2018-11-23 | 中国东方电气集团有限公司 | A kind of combustion oscillation control structure for combustion apparatus |
| CN113676827A (en) * | 2021-08-25 | 2021-11-19 | 西北工业大学 | Direct-blowing type variable frequency oscillation experimental device for measuring frequency response function of solid propellant |
| CN114109814A (en) * | 2021-11-05 | 2022-03-01 | 中国航发西安动力控制科技有限公司 | Flow pulsation monitoring system and method for aviation electric fuel pump |
| CN114109797A (en) * | 2021-11-05 | 2022-03-01 | 中国航发西安动力控制科技有限公司 | Aviation electric fuel pump test system and method |
| CN114811651A (en) * | 2022-06-01 | 2022-07-29 | 清华大学 | Electric heating stable combustion system, method and storage medium |
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2012
- 2012-11-20 CN CN 201220614752 patent/CN202954883U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523164A (en) * | 2016-12-08 | 2017-03-22 | 中国科学院工程热物理研究所 | Low-emission three-loop lean oil pre-mixing and active combustion control device and method |
| CN106523164B (en) * | 2016-12-08 | 2018-01-05 | 中国科学院工程热物理研究所 | A kind of lean premixed active combustion control device and method in the loop of low emission three |
| CN108870439A (en) * | 2018-07-27 | 2018-11-23 | 中国东方电气集团有限公司 | A kind of combustion oscillation control structure for combustion apparatus |
| CN113676827A (en) * | 2021-08-25 | 2021-11-19 | 西北工业大学 | Direct-blowing type variable frequency oscillation experimental device for measuring frequency response function of solid propellant |
| CN114109814A (en) * | 2021-11-05 | 2022-03-01 | 中国航发西安动力控制科技有限公司 | Flow pulsation monitoring system and method for aviation electric fuel pump |
| CN114109797A (en) * | 2021-11-05 | 2022-03-01 | 中国航发西安动力控制科技有限公司 | Aviation electric fuel pump test system and method |
| CN114109814B (en) * | 2021-11-05 | 2023-10-20 | 中国航发西安动力控制科技有限公司 | Flow pulsation monitoring system and method for aviation electric fuel pump |
| CN114109797B (en) * | 2021-11-05 | 2023-10-20 | 中国航发西安动力控制科技有限公司 | Aviation electric fuel pump testing system and method |
| CN114811651A (en) * | 2022-06-01 | 2022-07-29 | 清华大学 | Electric heating stable combustion system, method and storage medium |
| CN114811651B (en) * | 2022-06-01 | 2023-03-24 | 清华大学 | Electric heating stable combustion system, method and storage medium |
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Address after: 200241 Minhang District Lianhua Road, Shanghai, No. 3998 Patentee after: AECC COMMERCIAL AIRCRAFT ENGINE Co.,Ltd. Address before: 201109 Shanghai city Minhang District Hongmei Road No. 5696 Room 101 Patentee before: AVIC Commercial Aircraft Engine Co.,Ltd. |
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Granted publication date: 20130529 |