CN114674011B - Cyclone and power system - Google Patents
Cyclone and power system Download PDFInfo
- Publication number
- CN114674011B CN114674011B CN202210249084.7A CN202210249084A CN114674011B CN 114674011 B CN114674011 B CN 114674011B CN 202210249084 A CN202210249084 A CN 202210249084A CN 114674011 B CN114674011 B CN 114674011B
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- Prior art keywords
- cover plate
- blade
- driving
- shaft
- cyclone
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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
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/04—Air inlet arrangements
- F23R3/10—Air inlet arrangements for primary air
- F23R3/12—Air inlet arrangements for primary air inducing a vortex
- F23R3/14—Air inlet arrangements for primary air inducing a vortex by using swirl vanes
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- 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
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/14—Gas-turbine plants characterised by the use of combustion products as the working fluid characterised by the arrangement of the combustion chamber in the plant
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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
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/26—Controlling the air flow
Abstract
The present disclosure provides a cyclone and a power system, wherein the cyclone includes a casing, a driving mechanism, and a plurality of blades; the casing is provided with a first cover plate and a second cover plate which are oppositely arranged; each blade is provided with a rotating shaft, and the rotating shaft is rotationally connected with the first cover plate and the second cover plate; the driving mechanism is arranged on one side of the first cover plate far away from the second cover plate, and is provided with a plurality of output ends capable of rotating reciprocally, and each output end is correspondingly connected with the rotating shaft of one blade. The cyclone disclosed by the invention realizes that the blade flapping and the blade angle are adjustable, and can adjust the blade angle and the blade flapping frequency according to different working conditions of the combustion chamber, thereby actively inhibiting unstable combustion factors and improving combustion stability.
Description
Technical Field
The present disclosure relates to the field of power systems, and more particularly to a cyclone and a power system.
Background
Lean premixed flames in combustion chambers of power systems such as aeroengines, gas turbines and the like are easily affected by airflow disturbance, are easily thermally coupled with combustion chamber acoustic pulsations, cause unstable combustion, reduce the stable operation range of the engines, affect the performance of the combustion chambers, and even cause structural damage to engine components.
Disclosure of Invention
The utility model provides a swirler and driving system realizes that blade beat shake and blade angle are adjustable, can adjust blade angle and blade beat shake frequency according to the different operating modes of combustion chamber to initiatively restrain the unstable factor of burning, promote combustion stability.
In a first aspect, the present disclosure provides a cyclone comprising:
the machine case is provided with a first cover plate and a second cover plate which are oppositely arranged;
the blades are arranged between the first cover plate and the second cover plate, each blade is provided with a rotating shaft, and the rotating shafts are rotationally connected with the first cover plate and the second cover plate;
the driving mechanism is arranged on one side, far away from the second cover plate, of the first cover plate, and is provided with a plurality of output ends capable of rotating reciprocally, and each output end is correspondingly connected with a rotating shaft of one blade.
In one embodiment, the drive mechanism includes:
the axial lead of the main driving piece is coincident with the axial lead of the first cover plate;
the auxiliary driving parts are in transmission connection with the main driving part, and each auxiliary driving part is provided with a connecting shaft; when the main driving piece drives the auxiliary driving piece to rotate, the connecting shaft moves along the circumferential direction of the auxiliary driving piece;
the transmission assemblies are provided with a first connecting part and a second connecting part; the first connecting part is an output end of the driving mechanism, and each blade is correspondingly and rotatably connected with the first connecting part of one transmission assembly; the second connecting part of each transmission assembly is rotationally connected with the connecting shaft of one driven member.
In one embodiment, the transmission assembly includes a drive rod and a driven rod; one end of the driving rod is the second connecting part, and one end of the driven rod is the first connecting part; one end of the driving rod, which is far away from the second connecting part, is rotationally connected with one end of the driven rod, which is far away from the first connecting part.
In one embodiment, the drive mechanism further comprises an adjustment wheel; a driving support shaft is arranged on one side surface of the first cover plate, which is far away from the second cover plate, and the adjusting wheel is rotatably arranged on the driving support shaft;
a plurality of first mounting holes are uniformly distributed on the regulating wheel along the circumferential direction of the regulating wheel, and each driven piece is correspondingly and rotatably mounted on one first mounting hole;
the main driving piece is rotatably arranged on the adjusting wheel, and the axial lead of the main driving piece is the same as that of the adjusting wheel.
In one embodiment, the master driving member is a master gear, the slave driving member is a slave gear, the slave gear is in meshed transmission connection with the master gear, and the connecting shaft is an eccentric shaft arranged on the slave gear.
In one embodiment, the rotating shaft comprises a first rotating shaft and a second rotating shaft, and the first rotating shaft and the second rotating shaft are respectively arranged on the upper side and the lower side of the blade body of the blade; the axial leads of the first rotating shaft and the second rotating shaft are the same;
each first rotating shaft penetrates through the first cover plate along the axial direction of the first cover plate; each second rotating shaft is rotatably connected to the second cover plate;
each output end is correspondingly connected with a part of one first rotating shaft penetrating out of the first cover plate.
In one embodiment, the end part of the first rotating shaft is provided with a clamping structure, and the output end is provided with a bayonet matched with the clamping structure.
In one embodiment, the first cover plate is arranged parallel to the second cover plate, and the first cover plate is connected to the second cover plate by a cover plate support.
In one embodiment, a plurality of said blades are evenly spaced along the circumference of said main drive;
the blade is any one of an airfoil structure blade, a flat plate structure blade and a curved plate structure blade;
the number of the blades is N, and N is more than or equal to 8 and less than or equal to 20.
In a second aspect, the present disclosure provides a power system comprising a cyclone as described above.
Compared with the prior art, the cyclone disclosed by the invention is provided with a driving mechanism, wherein the driving mechanism is provided with a plurality of output ends capable of rotating reciprocally, and each output end is correspondingly connected with the rotating shaft of one blade; thereby drive the blade and rotate according to certain frequency, realize that the blade beats and shakes and angle modulation, in driving system, can be according to the operating mode of driving system combustion chamber, the blade of cyclone beats frequency and angle and adjusts, through the blade beat shake apply to the combustion chamber with the disturbance of combustion chamber upstream air current disturbance antiphase disturbance to restrain the unstable factor of burning, realize the initiative control of combustion instability, improve the stable operating range of combustion chamber.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
FIG. 1 illustrates a schematic partial cross-sectional structure of a cyclone of an embodiment of the disclosure;
FIG. 2 shows a schematic structural view of a first cover plate of an embodiment of the present disclosure;
FIG. 3 shows a schematic structural view of a second cover plate of an embodiment of the present disclosure;
FIG. 4 illustrates a schematic structural view of a blade according to an embodiment of the present disclosure;
FIG. 5 shows a schematic structural view of a drive rod of an embodiment of the present disclosure;
FIG. 6 illustrates a schematic structural view of a follower rod of an embodiment of the present disclosure;
FIG. 7 illustrates a schematic structural view of a slave drive member of an embodiment of the present disclosure;
FIG. 8 illustrates a schematic view of a blade position with a large blade angle in an embodiment of the present disclosure;
FIG. 9 illustrates a schematic view of blade position with a smaller blade angle in an embodiment of the present disclosure;
fig. 10 shows a schematic view of an adjustment wheel structure according to an embodiment of the present disclosure.
In the figure:
a casing 100; a driving mechanism 200; a blade 300; a transmission assembly 400; a first cover plate 110; a first shaft hole 111; a second mounting hole 112; a second cover plate 120; a second shaft hole 121; a third mounting hole 122; a cover plate support 130; a main drive 210; a slave drive 220; a connection shaft 221; an adjustment wheel 230; a first mounting hole 231; a rotation shaft 310; a second rotation shaft 311; a second rotation shaft 312; a clamping structure 3111; a first connection portion 401; a second connection 402; a driving lever 410; a driven lever 420; driving the support shaft 1101; swirl outlet 1201; bayonet 4011.
Detailed Description
Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure have been shown in the accompanying drawings, it is to be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.
In addition, embodiments of the present disclosure and features of the embodiments may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The term "including" and variations thereof as used herein are intended to be open-ended, i.e., including, but not limited to. The term "based on" is based at least in part on. The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments. Related definitions of other terms will be given in the description below. It should be noted that the terms "first," "second," and the like herein are merely used for distinguishing between different devices, components, or arrangements and not necessarily for defining the order or interdependence of such devices, components, or arrangements.
Referring to fig. 1-10, embodiments of the present disclosure provide a cyclone, comprising:
the casing 100, the casing 100 has a first cover plate 110 and a second cover plate 120 disposed opposite to each other;
a plurality of blades 300 disposed between the first cover plate 110 and the second cover plate 120, each blade 300 having a rotation shaft 310, the rotation shaft 310 being rotatably connected to the first cover plate 110 and the second cover plate 120;
the driving mechanism 200 is mounted on a side of the first cover plate 110 away from the second cover plate 120, and the driving mechanism 200 has a plurality of output ends capable of reciprocally rotating, and each output end is correspondingly connected with the rotating shaft 310 of one blade 300.
The cyclone in the embodiment of the disclosure is a radial cyclone formed by a first cover plate 110, a second cover plate 120, a vane 300, and the like, and a cyclone outlet 1201 is formed in the second cover plate 120. The gaps between the first cover plate 110, the second cover plate 120 and the vanes 300 form a swirl air inlet passage, and in use, non-swirl air enters the swirler from the swirl air inlet passage, generates swirl flow, and then flows out from swirl outlets 1201 on the swirl second cover plate 120. Since the driving mechanism 200 of the cyclone has a plurality of output ends capable of reciprocally rotating, each output end is correspondingly connected with the rotating shaft 310 of one blade 300; thereby driving the blade 300 to rotate according to a certain frequency, and realizing the flapping and angle adjustment of the blade 300. The cyclone of this embodiment is applied to the combustion chamber of driving system, can adjust the blade 300 beat vibration frequency and the angle of cyclone according to the operating mode of combustion chamber, applys the disturbance that is opposite to the combustion chamber upstream air current disturbance in the combustion chamber through blade 300 beat vibration to restrain the unstable factor of burning, realize the initiative control of combustion instability, improve the stable operating range of combustion chamber.
In one example, referring to fig. 1-10, a drive mechanism 200 includes a master drive member 210, a plurality of slave drive members 220 drivingly connected to the master drive member 210, and a plurality of drive assemblies 400; the axis of the main driving member 210 coincides with the axis of the first cover plate 110; each slave driving member 220 has a connection shaft 221; when the master drive member 210 drives the slave drive member 220 to rotate, the connection shaft 221 moves in the circumferential direction of the slave drive member 220; each transmission assembly 400 has a first connection 401 and a second connection 402; the first connecting portion 401 is an output end of the driving mechanism 200, and each blade 300 is correspondingly and rotatably connected with the first connecting portion 401 of one transmission assembly 400; the second connection 402 of each transmission assembly 400 is rotatably coupled to a connection shaft 221 of the slave drive member 220. The plurality of slave driving members 220 are driven to rotate by the master driving member 210, so that the rotation speed of each slave driving member 220 is constrained by the rotation speed of the master driving member 210, and the rotation frequency of each slave driving member 220 is the same.
In one example, referring to fig. 1-10, a drive assembly 400 includes a drive rod 410 and a driven rod 420; one end of the driving rod 410 is a second connecting part 402, and one end of the driven rod 420 is a first connecting part 401; an end of the driving lever 410 remote from the second connection part 402 is rotatably connected to an end of the driven lever 420 remote from the first connection part 401. Wherein the number of driving levers 410, driven levers 420, and blades 300 is the same.
In one example, referring to fig. 1-10, the drive mechanism 200 is located on a side of the first cover plate 110 remote from the second cover plate 120; the rotating shaft 310 of the blade 300 comprises a first rotating shaft 311 and a second rotating shaft 312 which are respectively arranged at the upper side and the lower side opposite to the body of the blade 300, and the axial leads of the first rotating shaft 311 and the second rotating shaft 312 are the same; each first rotating shaft 311 passes through the first cover plate 110 along the axial direction of the first cover plate 110; each second rotating shaft 312 is rotatably connected to the second cover 120; the first connection portion 401 of each transmission assembly 400 is correspondingly connected with a portion of the first shaft 311 penetrating out of the first cover plate 110.
For example, referring to fig. 1 to 10, the end of the first shaft 311 has a fastening structure 3111, and the first connection portion 401 has a bayonet 4011 adapted to the fastening structure 3111. The bayonet 4011 may be a triangle, a quadrilateral, a semicircle, a polygon, or a non-circular hole according to the cross section of the fastening structure 3111, so that the first rotation shaft 311 and the first connection portion 401 are fixed relatively in the circumferential direction, and the first connection portion 401 is driven by the driving wheel to rotate the blade 300.
In one example, referring to fig. 1 to 10, the first cover plate 110 is disposed in parallel with the second cover plate 120, and the first cover plate 110 and the second cover plate 120 are connected by a cover plate support 130. By arranging the first cover plate 110 and the second cover plate 120 in parallel, gaps between the first cover plate 110 and the second cover plate 120 at all positions are equal, so that the temperature distribution of the combustion chamber of the power device is uniform, and the performance of the combustion chamber is improved.
1-10, the first cover plate 110 has a plurality of first shaft holes 111, the second cover plate 120 has a plurality of second shaft holes 121, the number of blades 300, the number of first shaft holes 111 and the number of second shaft holes 121 are the same, the first rotation shaft 311 of each blade 300 respectively passes through one first shaft hole 111, and the second rotation shaft 312 of each blade 300 respectively is rotatably mounted in the second shaft hole 121, such that the blades 300 can rotate within a certain angle range.
In one example, referring to fig. 1-10, the drive mechanism 200 further includes an adjustment wheel 230; the side of the first cover plate 110 far from the second cover plate 120 is provided with a driving support shaft 1101, and the adjusting wheel 230 is rotatably installed on the driving support shaft 1101; the adjusting wheel 230 is provided with a plurality of first mounting holes 231 uniformly distributed along the circumferential direction thereof, and each slave driving member 220 is correspondingly and rotatably mounted on one first mounting hole 231; the main driving member 210 is rotatably mounted on the adjustment wheel 230, and the axis of the main driving member 210 is identical to the axis of the adjustment wheel 230.
Based on the above structure, by rotating the adjustment wheel 230, the slave driving member 220 mounted on the adjustment wheel 230 is moved in the circumferential direction of the adjustment wheel 230, thereby adjusting the range of the flapping angle of the blade 300, and realizing the flapping angle range adjustment of the blade. Illustratively, when the slave drive member 220 is in the first position, the range of the angle of vibration of the blade 300 is 25 ° -30 °, and by rotating the adjustment wheel 230, the slave drive member 220 is moved in the circumferential direction of the adjustment wheel 230 to the second position, in which the range of the angle of vibration of the blade 300 is 30 ° -35 °; it should be noted that, the parameters of the above-mentioned vibration angle interval range are only better described by way of example, so that the public can understand the mode of adjusting the vibration angle interval of the blade, and the specific vibration angle interval range is not limited to 25 ° -30 ° or 30 ° -35 °, and the parameters can be actually set according to the needs of specific applications.
1-10, the adjustment wheel 230 of the present embodiment may be manually adjustable or may be rotated by a drive device such as a motor, hydraulic mechanism, or the like. The driving mechanism 200 may be a gear mechanism, that is, the main driving member 210 is a main gear, the auxiliary driving member 220 is an auxiliary gear, the auxiliary gear is meshed with the main gear in a transmission manner, and the connecting shaft 221 is an eccentric shaft arranged on the auxiliary gear. When the driven member 220 rotates, the connecting shaft 221 drives the driving rod 410 to move along the circumferential direction of the driven member 220, and the driving rod 410 drives the driven rod 420 to rotate, so as to drive the blade 300 to rotate, and the blade 300 is driven to reciprocate according to a certain frequency, so that the racket vibration is realized.
1-10, the first cover plate 110 has a plurality of second mounting holes 112, and the second cover plate 120 has a plurality of third mounting holes 122. The number of the second mounting holes 112, the number of the third mounting holes 122 and the number of the cover plate supports 130 are the same, and the corresponding number of the cover plate supports 130 may be selected according to the needs of practical applications. The position of each second mounting hole 112 corresponds to the position of one third mounting hole 122; one end of the cover mounting member is mounted in the second mounting hole 112 and the other end is mounted in the third mounting hole 122, thereby connecting the first cover 110 and the second cover 120 with a space for accommodating the vane 300 between the first cover 110 and the second cover 120.
In one example, referring to fig. 1-10, a plurality of vanes 300 are evenly spaced circumferentially about the main drive 210 to provide more even air intake from the side of the shroud 100 of the swirler. The number of the blades 300 is N, and N is more than or equal to 8 and less than or equal to 20. According to the actual application requirements, the proper number of blades 300 can be selected; the blade 300 may be configured as any one of an airfoil-shaped structural blade 300, a flat-plate structural blade 300, and a curved-plate structural blade 300.
Embodiments of the present disclosure also provide a power system including the above-described swirler, the power system including, but not limited to, an engine, a gas turbine, and the like.
The present embodiment applies the cyclone to the power system, and thus, the principle and effects of the present embodiment have been described in the above-described embodiment of the cyclone, and the present embodiment will not be repeated.
It will be appreciated by those skilled in the art that the above-described embodiments are merely for clarity of illustration of the disclosure, and are not intended to limit the scope of the disclosure. Other variations or modifications will be apparent to persons skilled in the art from the foregoing disclosure, and such variations or modifications are intended to be within the scope of the present disclosure.
Claims (7)
1. A cyclone, comprising:
the machine case is provided with a first cover plate and a second cover plate which are oppositely arranged;
the blades are arranged between the first cover plate and the second cover plate, each blade is provided with a rotating shaft, and the rotating shafts are rotationally connected with the first cover plate and the second cover plate;
the driving mechanism is arranged on one side, far away from the second cover plate, of the first cover plate, and is provided with a plurality of output ends capable of rotating reciprocally, and each output end is correspondingly connected with a rotating shaft of one blade;
the driving mechanism includes: the axial lead of the main driving piece is coincident with the axial lead of the first cover plate;
the auxiliary driving parts are in transmission connection with the main driving part, and each auxiliary driving part is provided with a connecting shaft; when the main driving piece drives the auxiliary driving piece to rotate, the connecting shaft moves along the circumferential direction of the auxiliary driving piece;
the transmission assemblies are provided with a first connecting part and a second connecting part; the first connecting part is an output end of the driving mechanism, and each blade is correspondingly and rotatably connected with the first connecting part of one transmission assembly; the second connecting part of each transmission assembly is rotationally connected with the connecting shaft of one driven member;
the transmission assembly comprises a driving rod and a driven rod; one end of the driving rod is the second connecting part, and one end of the driven rod is the first connecting part; one end of the driving rod, which is far away from the second connecting part, is rotationally connected with one end of the driven rod, which is far away from the first connecting part;
the driving mechanism further comprises an adjusting wheel; a driving support shaft is arranged on one side surface of the first cover plate, which is far away from the second cover plate, and the adjusting wheel is rotatably arranged on the driving support shaft;
a plurality of first mounting holes are uniformly distributed on the regulating wheel along the circumferential direction of the regulating wheel, and each driven piece is correspondingly and rotatably mounted on one first mounting hole;
the main driving piece is rotatably arranged on the adjusting wheel, and the axial lead of the main driving piece is the same as that of the adjusting wheel.
2. The cyclone as claimed in claim 1, wherein the main driving member is a main gear, the auxiliary driving member is an auxiliary gear, the auxiliary gear is in meshed transmission connection with the main gear, and the connecting shaft is an eccentric shaft arranged on the auxiliary gear.
3. The cyclone as claimed in any one of claims 1 to 2, wherein the rotation shaft comprises a first rotation shaft and a second rotation shaft, which are respectively disposed at upper and lower sides of the vane body of the vane; the axial leads of the first rotating shaft and the second rotating shaft are the same;
each first rotating shaft penetrates through the first cover plate along the axial direction of the first cover plate; each second rotating shaft is rotatably connected to the second cover plate;
each output end is correspondingly connected with a part of one first rotating shaft penetrating out of the first cover plate.
4. A cyclone according to claim 3, wherein the end of the first shaft has a snap-fit structure and the output end has a bayonet fitting the snap-fit structure.
5. The cyclone of claim 1 wherein the first cover plate is disposed parallel to the second cover plate, the first cover plate being connected to the second cover plate by a cover plate support.
6. A cyclone as claimed in claim 1, wherein a plurality of said vanes are uniformly spaced circumferentially of said main drive;
the blade is any one of an airfoil structure blade, a flat plate structure blade and a curved plate structure blade;
the number of the blades is N, and N is more than or equal to 8 and less than or equal to 20.
7. A power system comprising a cyclone as claimed in any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210249084.7A CN114674011B (en) | 2022-03-14 | 2022-03-14 | Cyclone and power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210249084.7A CN114674011B (en) | 2022-03-14 | 2022-03-14 | Cyclone and power system |
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| CN114674011A CN114674011A (en) | 2022-06-28 |
| CN114674011B true CN114674011B (en) | 2023-04-25 |
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| CN202210249084.7A Active CN114674011B (en) | 2022-03-14 | 2022-03-14 | Cyclone and power system |
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| Title |
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| 柳伟杰.声激励下低旋流火焰动态响应特性研究.工程热物理学报.2022,第第43卷卷(第第43卷期),全文. * |
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| CN114674011A (en) | 2022-06-28 |
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