CN110552789A - fuel flow adjusting device and adjusting application method thereof - Google Patents
fuel flow adjusting device and adjusting application method thereof Download PDFInfo
- Publication number
- CN110552789A CN110552789A CN201910628525.2A CN201910628525A CN110552789A CN 110552789 A CN110552789 A CN 110552789A CN 201910628525 A CN201910628525 A CN 201910628525A CN 110552789 A CN110552789 A CN 110552789A
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- oil
- state
- needle
- stepping motor
- fuel flow
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- 239000000446 fuel Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 19
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 241001343274 Dichrostachys spicata Species 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 2
- 230000001568 sexual effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 74
- 239000000295 fuel oil Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
- F02C7/232—Fuel valves; Draining valves or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/26—Control of fuel supply
- F02C9/263—Control of fuel supply by means of fuel metering valves
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention belongs to the technical test field of aerospace engine metering adjustment, in particular to a fuel flow adjusting device which comprises a stepping motor driving system and a fuel metering valve system, and a fuel flow adjusting application method comprises the following steps of starting the stepping motor driving system, connecting an oil inlet joint to an oil pipe for readiness, adjusting an oil needle to a state where k is 0, and at the moment, keeping the oil needle in a stop state; adopt with basic platform, can accomplish the parking state, the regulation of slow-moving vehicle state and express train state is used, adopt conventional spare part, the practicality is good, low in manufacturing cost, the sexual valence relative altitude, rational in infrastructure, the security is high, structural design is reasonable, simple structure is with low costs, fuel metering valve door drag moment is little, light in weight, flow characteristic satisfies the designing requirement, adopt above-mentioned calibrating installation to provide a platform to accomplishing the parking state, the regulation of slow-moving vehicle state and express train state is used, utilize these advantages to reach advanced high accuracy calibrating installation.
Description
Technical Field
the invention belongs to the technical field of aerospace engine metering adjustment technical tests, and particularly relates to a fuel flow adjusting device and an adjusting application method thereof.
background
in the prior art of aerospace engines, what kind of fuel oil supply and control mechanism is adopted by the engine, the performance and reliability of the engine are directly influenced, in an engine numerical control system, a common electronic controller outputs a corresponding electric signal according to the fuel oil amount required by the current working condition of the engine, and the signal controls a fuel oil metering device to act, so that the fuel oil flow control is realized, and the fuel oil metering device is a key component in the whole system. At present, a fuel metering device applied to an aeroengine control system mainly comprises a variable stroke plunger pump and an electro-hydraulic servo valve, and the variable stroke plunger pump has a complex actuating mechanism and a large load; the electro-hydraulic servo valve requires a high-pressure oil source, the metering accuracy is reduced at a small flow rate, and both costs are high. The jet engine has the characteristics of high rotating speed and low oil consumption, and has higher requirement on the precision of fuel control, so that a plunger pump and an electro-hydraulic servo valve are not ideal fuel metering devices and aim at the requirement and the characteristic of the fuel control of the jet engine.
The invention is therefore a fuel flow regulating device intended to solve the problems set out in the background above.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides a fuel flow regulating device and a regulating application method thereof, which have the characteristics of reasonable structural design, simple structure, low cost, small moment of door resistance of a fuel metering valve, light weight, capability of meeting design requirements on flow characteristics and other parameters.
In order to achieve the purpose, the invention provides the following technical scheme: a fuel flow regulating device and a regulating application method thereof comprise a stepping motor driving system and a fuel metering valve system.
Preferably, the stepping motor driving system comprises a hybrid stepping motor and a connecting shaft, an output end of the hybrid stepping motor is fixedly connected with the connecting shaft, and the hybrid stepping motor adopts a two-phase hybrid structure of a subdivision driving technology.
preferably, the fuel metering valve system comprises a drive shaft, a seal end cap and a fuel needle, the drive shaft slides inside the seal end cap, a main shell is engaged and fixed at the outer side of the sealing end cover, small plugs A and small plugs B are clamped and fixed at the top end of the main shell in an obliquely symmetrical distribution, the right side of the small plug B is provided with a large plug which is fixedly clamped with the main shell, a throttle nozzle is fixed below the large plug, a sealing adjusting pad A is fixedly bonded on the right side of the main shell, a temperature and pressure measuring joint is clamped and fixed between the sealing adjusting pad A and the sealing adjusting pad B, the output end of the temperature and pressure measuring joint is connected with an oil outlet joint, the oil outlet joint is fixed with the main casing body in a clamping manner, an oil inlet joint is fixed to the bottom end of the main casing body in a threaded manner, and an oil needle bushing is connected to the left side of the top end of the oil inlet joint through a countersunk head pin.
Preferably, the drive shaft with through external screw thread and internal thread threaded connection between the oil needle, the oil trap has been seted up to the left end of oil needle, the right-hand member integrated into one piece of oil needle is connected with regulation oil cone and end, oil needle bush with the oil needle block is fixed, the inside of oil needle is close to the constant voltage regulation hole has been seted up to the one end of regulation oil cone, the right-hand member of oil needle is located the outside in constant voltage regulation hole has been seted up and has been prevented the groove, the oil trap has been seted up to the right-hand member of drive shaft.
A fuel flow regulation application method comprises the following steps:
a. Starting a stepping motor driving system, and connecting an oil inlet joint to an oil pipe to be ready;
b. The oil needle is adjusted to be in a stop state, oil supply is stopped, and oil can not enter the oil outlet joint when the oil needle is flamed out and not started;
c. Then the state of the slow vehicle is adjusted, and the stable and continuous oil supply is achieved through the molded surface B;
d. then, the vehicle is adjusted to a fast vehicle state, and the oil supply is gradually and continuously increased through the molded surface A and the molded surface B, so that the vehicle belongs to an oil filling state;
e. According to the actual state, the three states of parking, slow driving and fast driving are circulated in sequence, and the oil supply metering adjustment in any state can be achieved.
Compared with the prior art, the invention has the beneficial effects that:
1. The same basic platform is adopted, and the adjustment application of a parking state, a slow vehicle state and a fast vehicle state can be completed;
2. the conventional parts are adopted, so that the practicability is good, the manufacturing cost is low, the cost performance is high, the structure is reasonable, and the safety is high;
3. The calibrating device is reasonable in structural design, simple in structure and low in cost, the valve resistance moment of the fuel metering valve is small, the weight is light, the flow characteristic meets the design requirement, a platform is provided for the adjustment and application of the parking state, the slow-speed state and the fast-speed state, and the advanced calibrating device with high precision is achieved by utilizing the advantages.
Drawings
the accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the stepper motor drive system of the present invention;
FIG. 3 is a schematic diagram of the fuel metering valve system configuration of the present invention;
FIG. 4 is a schematic view of the drive shaft and oil needle connection of the present invention;
FIG. 5 is a structural schematic view of a parking state of the present invention;
FIG. 6 is a schematic view of the slow vehicle state structure of the present invention;
FIG. 7 is a structural schematic diagram of the express train state of the invention;
fig. 8 is a schematic view of the metering adjustment principle of the present invention.
in the figure: 1. a stepper motor drive system; 2. a fuel metering valve system; 3. a hybrid stepper motor; 4. a connecting shaft; 5. a drive shaft; 6. sealing the end cap; 7. a main housing; 8. a small plug A; 9. a small plug B; 10. large blockage; 11. a throttle nozzle; 12. an oil needle; 13. sealing the adjusting pad A; 14. a temperature and pressure measuring joint; 15. sealing the adjusting pad B; 16. an oil outlet joint; 17. countersunk head pins; 18. an oil inlet joint; 19. an oil needle bushing; 20. an external thread; 21. an oil sump; 22. an internal thread; 23. a constant pressure regulating orifice; 24. adjusting an oil cone; 25. a tip; 26. an anti-rotation slot; 27. an oil collecting tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides the following technical solutions: a fuel flow regulating device comprises a stepping motor driving system 1 and a fuel metering valve system 2.
Specifically, the stepping motor driving system 1 includes a hybrid stepping motor 3 and a connecting shaft 4, an output end of the hybrid stepping motor 3 is fixedly connected with the connecting shaft 4, and the hybrid stepping motor 3 adopts a two-phase hybrid structure of a subdivision driving technology.
Specifically, the fuel metering valve system 2 includes a drive shaft 5, the oil-gas separator comprises a sealing end cover 6 and an oil needle 12, a driving shaft 5 slides on the inner side of the sealing end cover 6, a main shell 7 is fixed on the outer side of the sealing end cover 6 in a meshed mode, a small plug A8 and a small plug B9 are fixed on the top end of the main shell 7 in an obliquely symmetrical distribution clamped mode, a large plug 10 is arranged on the right side of the small plug B9 and fixedly clamped with the main shell 7, a throttling nozzle 11 is fixed below the large plug 10, a sealing adjusting pad A13 is fixedly bonded on the right side of the main shell 7 in a bonded mode, a temperature and pressure measuring connector 14 is fixedly clamped between the sealing adjusting pad A13 and the sealing adjusting pad B15, the output end of the temperature and pressure measuring connector 14 is connected with an oil outlet connector 16, the oil outlet connector 16 is fixedly clamped with the main shell 7, an oil inlet connector 18 is fixedly screwed at the.
Specifically, through external screw thread 20 and internal thread 22 threaded connection between drive shaft 5 and the oil needle 12, oil catch bowl 21 has been seted up to the left end of oil needle 12, the right-hand member integrated into one piece of oil needle 12 is connected with regulation oil cone 24 and end 25, oil needle bush 19 is fixed with oil needle 12 block, the inside one end that is close to regulation oil cone 24 of oil needle 12 has seted up constant voltage regulation hole 23, the right-hand member of oil needle 12 is located the outside of constant voltage regulation hole 23 and has seted up anti-rotation groove 26, oil catch bowl 27 has been seted up to the right-hand member of drive shaft 5.
A fuel flow regulation application method comprises the following steps:
a. Starting the stepping motor driving system 1, and connecting the oil inlet joint 18 to an oil pipe to be ready;
b. firstly, the oil needle 12 is adjusted to a state that k is 0, and the oil needle is in a stop state at this time, oil supply is stopped, and oil can not enter the oil outlet joint 16 when the oil needle is flamed out and not started;
c. then adjusting to a state that k is more than 0 and delta is less than or equal to 0, and at the moment, keeping in a slow vehicle state, and achieving stable and continuous oil supply through the molded surface B;
d. then adjusting to a state that k is more than 0 and delta is more than 0, belonging to a fast driving state, and gradually and continuously increasing the oil supply through the molded surface A and the molded surface B, belonging to an oil filling state;
e. And (4) according to the actual state, sequentially circulating the three states of b, c and d, and achieving the oil supply metering regulation in any state.
the working principle and the using process of the invention are as follows: starting the stepping motor driving system 1, connecting the oil inlet joint 18 to the oil pipe for ready, firstly adjusting the oil needle 12 to a state of k being 0, at the time of stopping, stopping oil supply, enabling oil to be flamed out and not to enter the oil outlet joint 16 when not started, adjusting to a state of k being more than 0 and delta being less than or equal to 0, at the time of slow turning, achieving stable and continuous oil supply through the profile B, adjusting to a state of k being more than 0 and delta being more than 0, belonging to a state of fast turning, gradually and continuously increasing oil supply through the profile A and the profile B, belonging to an oil supply state, sequentially circulating three states of B, c and d according to an actual state, and achieving oil supply metering and adjustment in any state The calibrating device is light in weight, the flow characteristic meets the design requirement, a platform is provided for adjusting and applying the parking state, the slow-speed state and the fast-speed state, the calibrating device can adjust and apply the parking state, the slow-speed state and the fast-speed state by adopting the same basic platform, and the high-precision advanced calibrating device is achieved by utilizing the advantages.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. a fuel flow regulating device comprises a stepping motor driving system (1) and a fuel metering valve system (2).
2. the fuel flow regulating device according to claim 1, wherein: the stepping motor driving system (1) comprises a hybrid stepping motor (3) and a connecting shaft (4), wherein the output end of the hybrid stepping motor (3) is fixedly connected with the connecting shaft (4), and the hybrid stepping motor (3) adopts a two-phase hybrid structure of a subdivision driving technology.
3. The fuel flow regulating device according to claim 1, wherein: the fuel metering valve system (2) comprises a driving shaft (5), a sealing end cover (6) and an oil needle (12), wherein the driving shaft (5) is arranged on the inner side of the sealing end cover (6) in a sliding manner, a main shell (7) is fixed on the outer side of the sealing end cover (6) in a meshing manner, a small plug A (8) and a small plug B (9) are fixed on the oblique and symmetrical distribution clamping manner at the top end of the main shell (7), a large plug (10) is arranged on the right side of the small plug B (9), the large plug (10) is fixed with the main shell (7) in a clamping manner, a throttling nozzle (11) is fixed below the large plug (10), a sealing adjusting pad A (13) is fixedly bonded on the right side of the main shell (7), a temperature and pressure measuring joint (14) is fixedly bonded between the sealing adjusting pad A (13) and the sealing adjusting pad B (15), and an output end of the temperature and pressure measuring joint, the oil outlet joint (16) is fixed to the main shell (7) in a clamping mode, an oil inlet joint (18) is fixed to the bottom end of the main shell (7) in a threaded mode, and the left side of the top end of the oil inlet joint (18) is connected with an oil needle bushing (19) through a countersunk head pin (17).
4. a fuel flow regulating device according to claim 3, wherein: drive shaft (5) with through external screw thread (20) and internal thread (22) threaded connection between oil needle (12), oil trap (21) have been seted up to the left end of oil needle (12), the right-hand member integrated into one piece of oil needle (12) is connected with regulation oil cone (24) and end (25), oil needle bush (19) with oil needle (12) block is fixed, the inside of oil needle (12) is close to constant voltage regulation hole (23) have been seted up to the one end of regulation oil cone (24), the right-hand member of oil needle (12) is located prevent changeing groove (26) have been seted up in the outside of constant voltage regulation hole (23), oil trap (27) have been seted up to the right-hand member of drive shaft (5).
5. A fuel flow regulation application method is characterized in that: the method comprises the following steps:
a. Starting the stepping motor driving system (1), and connecting an oil inlet joint (18) to an oil pipe to be ready;
b. the oil needle (12) is adjusted to a stop state, oil supply is stopped, and oil can not enter the oil outlet joint (16) when the oil needle is shut down and is not started;
c. then the state of the slow vehicle is adjusted, and the stable and continuous oil supply is achieved through the molded surface B;
d. Then, the vehicle is adjusted to a fast vehicle state, and the oil supply is gradually and continuously increased through the molded surface A and the molded surface B, so that the vehicle belongs to an oil filling state;
e. According to the actual state, the three states of parking, slow driving and fast driving are circulated in sequence, and the oil supply metering adjustment in any state can be achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910628525.2A CN110552789A (en) | 2019-09-20 | 2019-09-20 | fuel flow adjusting device and adjusting application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910628525.2A CN110552789A (en) | 2019-09-20 | 2019-09-20 | fuel flow adjusting device and adjusting application method thereof |
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| Publication Number | Publication Date |
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| CN110552789A true CN110552789A (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910628525.2A Pending CN110552789A (en) | 2019-09-20 | 2019-09-20 | fuel flow adjusting device and adjusting application method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681330A (en) * | 2019-03-06 | 2019-04-26 | 成立航空技术有限公司 | A kind of aerospace fuel flow regulating device and its adjust application method |
| CN209637889U (en) * | 2019-03-06 | 2019-11-15 | 成立航空技术有限公司 | A kind of aerospace fuel flow regulating device |
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2019
- 2019-09-20 CN CN201910628525.2A patent/CN110552789A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681330A (en) * | 2019-03-06 | 2019-04-26 | 成立航空技术有限公司 | A kind of aerospace fuel flow regulating device and its adjust application method |
| CN209637889U (en) * | 2019-03-06 | 2019-11-15 | 成立航空技术有限公司 | A kind of aerospace fuel flow regulating device |
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Application publication date: 20191210 |
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