CN106969381B - Adjustable cyclone coupling nozzle - Google Patents
Adjustable cyclone coupling nozzle Download PDFInfo
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- CN106969381B CN106969381B CN201710188340.5A CN201710188340A CN106969381B CN 106969381 B CN106969381 B CN 106969381B CN 201710188340 A CN201710188340 A CN 201710188340A CN 106969381 B CN106969381 B CN 106969381B
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- adjustable
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- sleeve
- nozzle
- flange
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/38—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply comprising rotary fuel injection means
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
- Cyclones (AREA)
Abstract
The invention discloses an adjustable cyclone coupling nozzle, which comprises a basic sleeve, a centrifugal nozzle, an adjustable bushing, a retainer and a miniature motor, wherein the centrifugal nozzle is arranged on the basic sleeve; the centrifugal nozzle is screwed into the base sleeve through threads; the two adjustable bushings are symmetrically sleeved outside the base sleeve, and the adjustable tongue piece is matched with the limiting piece on the base sleeve; the adjustable bushing is arranged in the limit rectangular hole of the retainer; the miniature motors are symmetrically distributed on two sides of the retainer, and the motor shaft is in threaded connection with the adjustable bushing; the base sleeve is fixed on the retainer through a flange; the adjustable cyclone coupling nozzle provided by the invention can generate an oil mist field matched with a flow field in a combustion chamber under different working conditions of an aero-engine through the adjustment of the length of the tongue piece, so that the on-off performance is improved, the combustion efficiency is improved, and the pollutant emission is reduced.
Description
Technical Field
The invention relates to the field of aero-engine combustion chamber nozzles, in particular to an adjustable cyclone coupling nozzle.
Background
Since the 21 st century, aviation gas turbine combustors developed in three major trends, namely, low-pollution emission combustors, high-thrust-weight-ratio high-temperature-rise combustors, and wider-range combined-power combustors, which are all urgent needs to improve combustion technology to achieve the aim. The key point of the improved combustion technology is that the oil-gas matching effect in the Ganshan is improved, and the oil-gas mixing efficiency is improved. The oil mist field of the centrifugal nozzle and the pneumatic atomizing nozzle which are commonly used at present is difficult to match with the flow field structure in some special combustion chambers, so that the deterioration of the flameout performance, the reduction of the combustion efficiency and the increase of pollutant emission are caused. The cyclone coupling nozzle can solve the problems to a certain extent, and can realize matching of fuel gas and air in some special combustion chambers. However, under different working conditions of the engine, the oil mist field matched with the flow field in the combustion chamber is different, and the oil mist field of the non-adjustable cyclone coupling nozzle is difficult to adapt to the oil mist field required under different working conditions of the engine, so that the combustion efficiency of the combustion chamber can be reduced, and the emission is increased.
Disclosure of Invention
Aiming at the defects related to the background technology, the invention provides the cyclone coupling nozzle which changes the shape of the tongue piece and the oil mist field to adapt to the flow field of the combustion chamber under different working conditions of the engine, improves the combustion efficiency of the combustion chamber and reduces the emission.
The invention comprises a basic sleeve, a centrifugal nozzle, an adjustable bushing, a retainer and a miniature motor.
The center of the foundation sleeve is provided with a first threaded hole which penetrates through the foundation sleeve, one end of the end face of the foundation sleeve provided with the first threaded hole is provided with a flange, the other end of the end face of the foundation sleeve is provided with a limiting piece, and a plurality of flange positioning holes are formed in the flange.
The centrifugal nozzle is characterized in that a first external thread matched with the first threaded hole is formed on the outer surface of the centrifugal nozzle, the centrifugal nozzle is screwed into the first threaded hole of the foundation sleeve through the first external thread, an air inlet gap is reserved between the first threaded hole and the first external thread, a section of cavity is formed between the top of the centrifugal nozzle and the inner head of the foundation sleeve, and the cavity and the air inlet gap form a gas channel.
The adjustable bushing is sleeved on two sides of the foundation sleeve, a boss is arranged on the side wall of the adjustable bushing, a second threaded hole is arranged in the center of the boss, a tongue piece is arranged at one end of the adjustable bushing, a chute matched with the limiting piece is arranged on the tongue piece, the chute limits the adjustable bushing to transversely move along the side wall of the foundation sleeve through the limiting piece, and the length of the equivalent tongue piece is prolonged or shortened, so that an oil mist field can be changed, the oil mist field matched with the flow field in a combustion chamber of an aeroengine under different working conditions is generated, and the flameout performance is improved.
The retainer center open and to have location through-hole and third screw hole, the shape and the quantity of third screw hole cooperate with the flange locating hole on the flange in the basic sleeve, the outside shape size of the basic sleeve that location through-hole and both sides cover have adjustable bush is the same, location through-hole both sides open have with miniature motor shape size matched with first side opening and second side opening, all install a miniature motor in every side opening.
The miniature motor comprises a motor main body and an output shaft, wherein a second external thread is formed on the output shaft and matched with a second threaded hole in the adjustable bushing.
The appearance of the foundation sleeve is cuboid, the adjustable bushing structure is a dustpan-shaped U-shaped structure, the sliding groove is two U-shaped grooves which are symmetrically distributed, and the limiting piece is inserted into the U-shaped groove to limit the movement of the adjustable bushing.
The flange locating hole is a conical hole, a counter bore or a round hole, and is fixed with a third threaded hole on the retainer through a screw.
The first side hole and the second side hole are round holes, and the motor main body of the miniature motor is a cylinder.
The invention has the beneficial effects that:
1. compared with the traditional centrifugal nozzle and the pneumatic atomizing nozzle, the oil mist field of the adjustable cyclone coupling nozzle can adapt to the flow field in a combustion chamber with a special structure, so that the flameout performance is improved, the combustion efficiency is improved, and the pollution emission is reduced.
2. Compared with a common cyclone coupling nozzle, the oil mist field of the adjustable cyclone coupling nozzle can adapt to the flow field in the combustion chamber under different working conditions of the engine, so that the on-off performance is improved, the combustion efficiency is improved, and the pollution emission is reduced.
Drawings
Fig. 1 is an exploded view of an adjustable cyclone coupling nozzle provided by an embodiment of the present invention.
Fig. 2 is a schematic structural view of a base sleeve of an adjustable cyclone coupling nozzle according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a centrifugal nozzle of an adjustable cyclone coupling nozzle according to an embodiment of the present invention.
FIG. 4 is a schematic view of an adjustable bushing of an adjustable cyclone coupling nozzle according to an embodiment of the present invention.
Fig. 5 is a schematic structural view of a holder of an adjustable cyclone coupling nozzle according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a micro-motor with an adjustable cyclone coupling nozzle according to an embodiment of the present invention.
Fig. 7 is a schematic structural view of an adjustable cyclone coupling nozzle according to an embodiment of the present invention.
FIG. 8 is a schematic illustration of an adjustable cyclonic coupling nozzle tongue adjustment according to an embodiment of the present invention.
FIG. 9 is a schematic view of a base sleeve, an adjustable centrifugal nozzle, and a bushing connection of an adjustable cyclone coupling nozzle according to an embodiment of the present invention.
In the figure, a 100-adjustable cyclone coupling nozzle, a 10-base sleeve, a 11-air inlet seam, a 12-limit plate, a 13-first threaded hole, a 14-flange, a 14 a-flange positioning hole, a 20-centrifugal nozzle, a 21-first external thread, a 30-adjustable bushing, a 31-tongue piece, a 31 a-chute, a 32-boss and a 33-second threaded hole are shown; 40-a retainer, 41-a positioning through hole, 42-a first side hole, 43-a second side hole and 44-a third threaded hole; 50-micro motor, 51-motor body, 52-output shaft, 52 a-second external screw thread.
Description of the embodiments
The invention is further described below with reference to the drawings and the detailed description.
The invention provides an adjustable cyclone coupling nozzle 100, an exploded view of which is shown in fig. 1, and an assembled structure of which is shown in fig. 7, comprising a base sleeve 10, a centrifugal nozzle 20, an adjustable bushing 30, a retainer 40 and a micro motor 50.
As shown in fig. 2, the center of the base sleeve 10 is provided with a first threaded hole 13 which penetrates through, one end of the end surface of the base sleeve 10 provided with the first threaded hole 13 is provided with a flange 14, the other end of the end surface is provided with a limiting piece 12, and the flange 14 is provided with a plurality of flange positioning holes 14a.
The outer surface of the centrifugal nozzle 20 is provided with a first external thread 21 matched with the first threaded hole 13 as shown in fig. 3, the centrifugal nozzle 20 is screwed into the first threaded hole 13 of the base sleeve 10 through the first external thread 21, an air inlet gap 11 is reserved between the first threaded hole and the first external thread 21, the top of the centrifugal nozzle 20 and the inner head of the base sleeve 10 form a section of cavity, and the cavity and the air inlet gap 11 form an air channel as shown in fig. 9.
The two sides of the base sleeve 10 are sleeved with a pair of adjustable bushings 30 with the same structure, as shown in fig. 4, the side walls of the adjustable bushings 30 are provided with bosses 32, the centers of the bosses 32 are provided with second threaded holes 33, one ends of the adjustable bushings 30 are provided with tongue pieces 31, the tongue pieces 31 are provided with sliding grooves 31a matched with the limiting pieces 12, the sliding grooves 31a limit the adjustable bushings 30 to transversely move along the side walls of the base sleeve 10 through the limiting pieces 12, as shown in fig. 8, the extension or shortening of the equivalent tongue piece length is realized, thus an oil mist field can be changed, the oil mist field matched with the flow fields in the combustion chamber under different working conditions of the aeroengine is generated, and the ignition and flameout performance is improved.
As shown in fig. 5, the retainer 40 is provided with a positioning through hole 41 and a third threaded hole 44 in the center, the shape and number of the third threaded hole 44 are matched with those of the flange positioning hole 14a on the flange 14 in the base sleeve 10, the positioning through hole 41 is identical to those of the outside of the base sleeve 10 with adjustable bushings 30 sleeved on two sides, two sides of the positioning through hole 41 are provided with a first side hole 42 and a second side hole 43 matched with those of the micro motor 50, and each side hole is provided with a micro motor 50.
The micro motor 50, as shown in fig. 6, comprises a motor main body 51 and an output shaft 52, wherein the output shaft 52 is provided with a second external thread 52a, and the second external thread 52a is matched with the second threaded hole 33 in the adjustable bushing 30.
The foundation sleeve 10 is rectangular in shape, the adjustable bushing 30 is of a dustpan-shaped U-shaped structure, the sliding groove 31a is two symmetrically distributed U-shaped grooves, and the limiting piece 12 is inserted into the U-shaped grooves to limit the movement of the adjustable bushing 30.
The flange positioning hole 14a is a conical hole, a counter bore or a round hole, and the flange positioning hole 14a is fixed with a third threaded hole 44 on the retainer 40 through a screw.
The first side hole 42 and the second side hole 43 are round holes, and the motor body 51 of the micro motor 50 is a cylinder.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (2)
1. An adjustable cyclone coupling nozzle, characterized in that: comprises a basic sleeve (10), a centrifugal nozzle (20), an adjustable bushing (30), a retainer (40) and a miniature motor (50);
the center of the foundation sleeve (10) is provided with a first threaded hole (13) which penetrates through the foundation sleeve, one end of the end face of the foundation sleeve (10) provided with the first threaded hole (13) is provided with a flange (14), the other end of the end face of the foundation sleeve is provided with a limiting piece (12), and the flange (14) is provided with a plurality of flange positioning holes (14 a);
the outer surface of the centrifugal nozzle (20) is provided with a first external thread (21) matched with the first threaded hole (13), the centrifugal nozzle (20) is screwed into the first threaded hole (13) of the base sleeve (10) through the first external thread (21), an air inlet gap (11) is reserved between the first threaded hole and the first external thread (21), a section of cavity is formed between the top of the centrifugal nozzle (20) and the inner head of the base sleeve (10), and the cavity and the air inlet gap (11) form an air channel;
the two sides of the foundation sleeve (10) are sleeved with a pair of adjustable bushings (30) with the same structure, the side walls of the adjustable bushings (30) are provided with bosses (32), the centers of the bosses (32) are provided with second threaded holes (33), one end of each adjustable bushing (30) is provided with a tongue piece (31), each tongue piece (31) is provided with a sliding groove (31 a) matched with a limiting piece (12), and the sliding grooves (31 a) limit the adjustable bushings (30) to transversely move along the side walls of the foundation sleeve (10) through the limiting pieces (12);
the center of the retainer (40) is provided with a positioning through hole (41) and a third threaded hole (44), the shape and the number of the third threaded holes (44) are matched with those of flange positioning holes (14 a) on a flange (14) in the base sleeve (10), the shape and the size of the positioning through hole (41) are the same as those of the outside of the base sleeve (10) with adjustable bushings (30) sleeved on the two sides, the two sides of the positioning through hole (41) are provided with a first side hole (42) and a second side hole (43) which are matched with those of a miniature motor (50), and each side hole is internally provided with a miniature motor (50);
the miniature motor (50) comprises a motor main body (51) and an output shaft (52), a second external thread (52 a) is arranged on the output shaft (52), and the second external thread (52 a) is matched with a second threaded hole (33) in the adjustable bushing (30); the appearance of the foundation sleeve (10) is cuboid, the structure of the adjustable bushing (30) is a dustpan-shaped U-shaped structure, the sliding chute (31 a) is two symmetrically distributed U-shaped grooves, and the limiting piece (12) is inserted into the U-shaped grooves to limit the movement of the adjustable bushing (30); the flange positioning hole (14 a) is a conical hole, a counter bore or a round hole, and the flange positioning hole (14 a) is fixed with a third threaded hole (44) on the retainer (40) through a screw.
2. The adjustable cyclone coupling nozzle of claim 1, wherein: the first side hole (42) and the second side hole (43) are round holes, and the motor main body (51) of the miniature motor (50) is a cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710188340.5A CN106969381B (en) | 2017-03-27 | 2017-03-27 | Adjustable cyclone coupling nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710188340.5A CN106969381B (en) | 2017-03-27 | 2017-03-27 | Adjustable cyclone coupling nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106969381A CN106969381A (en) | 2017-07-21 |
| CN106969381B true CN106969381B (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710188340.5A Active CN106969381B (en) | 2017-03-27 | 2017-03-27 | Adjustable cyclone coupling nozzle |
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| CN (1) | CN106969381B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107588434A (en) * | 2017-09-25 | 2018-01-16 | 上海泛智能源装备有限公司 | A kind of spray cooling structure and combustor test device |
| CN109185923B (en) * | 2018-08-03 | 2023-09-12 | 新奥能源动力科技（上海）有限公司 | Combustion chamber head device, combustion chamber and gas turbine |
| CN109185924B (en) * | 2018-08-03 | 2023-09-12 | 新奥能源动力科技（上海）有限公司 | Combustion chamber head device, combustion chamber and gas turbine |
| CN109099461B (en) * | 2018-08-03 | 2023-08-15 | 新奥能源动力科技（上海）有限公司 | Combustion chamber head device, combustion chamber and gas turbine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB685068A (en) * | 1950-03-21 | 1952-12-31 | Shell Refining & Marketing Co | Combustion chamber for gas turbines |
| US3887135A (en) * | 1973-11-15 | 1975-06-03 | Shigetake Tamai | Gas-atomizing nozzle by spirally rotating gas stream |
| US6289676B1 (en) * | 1998-06-26 | 2001-09-18 | Pratt & Whitney Canada Corp. | Simplex and duplex injector having primary and secondary annular lud channels and primary and secondary lud nozzles |
| CN103047682A (en) * | 2012-12-27 | 2013-04-17 | 中国燃气涡轮研究院 | Partial pre-mixing and pre-evaporation burning chamber with prefilm type nozzle |
| CN105823086A (en) * | 2016-03-25 | 2016-08-03 | 南京航空航天大学 | Cyclonic coupling nozzle |
| CN206973618U (en) * | 2017-03-27 | 2018-02-06 | 南京航空航天大学 | Adjustable cyclone coupling spray nozzle |
-
2017
- 2017-03-27 CN CN201710188340.5A patent/CN106969381B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB685068A (en) * | 1950-03-21 | 1952-12-31 | Shell Refining & Marketing Co | Combustion chamber for gas turbines |
| US3887135A (en) * | 1973-11-15 | 1975-06-03 | Shigetake Tamai | Gas-atomizing nozzle by spirally rotating gas stream |
| US6289676B1 (en) * | 1998-06-26 | 2001-09-18 | Pratt & Whitney Canada Corp. | Simplex and duplex injector having primary and secondary annular lud channels and primary and secondary lud nozzles |
| CN103047682A (en) * | 2012-12-27 | 2013-04-17 | 中国燃气涡轮研究院 | Partial pre-mixing and pre-evaporation burning chamber with prefilm type nozzle |
| CN105823086A (en) * | 2016-03-25 | 2016-08-03 | 南京航空航天大学 | Cyclonic coupling nozzle |
| CN206973618U (en) * | 2017-03-27 | 2018-02-06 | 南京航空航天大学 | Adjustable cyclone coupling spray nozzle |
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| Publication number | Publication date |
|---|---|
| CN106969381A (en) | 2017-07-21 |
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