CN203586284U - Axial blade type cyclone with direct flow holes - Google Patents
Axial blade type cyclone with direct flow holes Download PDFInfo
- Publication number
- CN203586284U CN203586284U CN201320727294.9U CN201320727294U CN203586284U CN 203586284 U CN203586284 U CN 203586284U CN 201320727294 U CN201320727294 U CN 201320727294U CN 203586284 U CN203586284 U CN 203586284U
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- Prior art keywords
- direct current
- cylinder
- ring hub
- hub
- hole
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- Expired - Lifetime
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 29
- 239000000446 fuel Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000003134 recirculating effect Effects 0.000 description 16
- 230000000694 effects Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000010304 firing Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010761 intermediate fuel oil Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides an axial blade type cyclone with direct flow holes. The axial blade type cyclone comprises an outer ring hub, an inner ring hub, a cylinder with holes and a plurality of cured blades. The cured blades are evenly arranged between the outer ring hub and the inner ring hub. The cylinder with the holes is arranged in the inner ring hub in a sleeved mode. The diameter of the cylinder with the holes is equal to the inner diameter of the inner ring hub. An oil nozzle base is arranged at the center of the cylinder with the holes. A plurality of direct flow holes are formed in the periphery of the oil nozzle base and penetrate through the cylinder with the holes in the axial direction. The outer ring hub, the inner ring hub, the cylinder with the holes and the oil nozzle base are provided with the same central axis. The axial blade type cyclone is benefit to combustion enhancing of mainstream fuel, solves the problem that the temperature of the center is low due to backflow, can improve ignition conditions, is stable in combustion, and improves work conditions of a combustion chamber.
Description
Technical field
The utility model belongs to swirl flow combustion field, be specifically related to a kind of can rotational flow strengthening burning and improve the bladed axial swirler with direct current hole of efficiency of combustion.
Background technology
Swirl flow combustion is a kind of effective means of overheavy firing, and cyclone is the important device that realizes swirl flow combustion.Cyclone is one of most important parts of swirl combustion chamber, and its performance directly has influence on combustion chamber work and performance.
Because the air-flow of strong rotation produces recirculating zone, make to enter the unburned fuel of burner inner liner and the mixture of air can be lighted smoothly.The advantage such as swirl combustion chamber has compact conformation, the length of flame is short, combustion stability good, efficiency of combustion is high and pollutant discharge amount is low.And cyclone is as one of critical component of swirl combustion chamber, and the service behaviour of combustion chamber is had to direct impact.
Cyclone is arranged on the leading portion of burner inner liner, and its Main Function is: 1) at burner inner liner head, produce recirculating zone, high-temperature fuel gas is refluxed, stabilize the flame; 2) relative velocity of increase air-flow and oil droplet, promotes combustion oil atomization, makes the blending better of air and fuel oil; 3) at the flame on duty of recirculating zone formation stability and high efficiency, light follow-up gaseous mixture, improve efficiency of combustion.
During airflow passes cyclone, under the guide functions of swirl vane, rotate, formed three-dimensional rotation air-flow.Under the viscous effect of air, eddy current is taken away the gas of vicinity, burner inner liner center, makes center pressure decreased, so just on axis direction, has formed pressure differential.Under the effect of this pressure reduction, dirty just have portion gas adverse current to come, thereby formed the backflow of gas, produced recirculating zone.The troubled water of gas and fuel can be improved in recirculating zone, stabilizes the flame.
Figure 1 shows that single-stage axial swirler of the prior art, the centre of cyclone is cylindrical cavity, generally arranges atomizer pedestal herein, and some curvature of space curved surface 5 blade shrouds are equidistantly arranged around interior ring hub.This structure of cyclone forces in the passage of air-flow between blade and flows through and in exit, produce afterwards tangential velocity, thereby can produce powerful eddy flow, eddy flow makes the air in cyclone exit flow to surrounding due to centrifugal action, causes the behind of cyclone outlet can form a low-pressure area.Like this, under the effect of pressure differential, can there is a recirculating zone contrary with mainstream speed behind at cyclone.And existing technology also has many weak points, such as produced recirculating zone is shorter, turbulence intensity is larger, to such an extent as to the time that fuel-steam stops in recirculating zone is shorter, is unfavorable for the stable of flame and burning efficiently.
Utility model content
The purpose of this utility model is for the deficiencies in the prior art, and a kind of bladed axial swirler with direct current hole is provided; This bladed axial swirler with direct current hole is in reasonably arranging section direct current hole pass into direct current wind of the surrounding at cyclone center, and this part air-flow can be carried a small amount of mist of oil secretly and enter recirculating zone burning, contributes to the combustion intensification of main flow fuel.Can make flame draw close to center adding of centre wind simultaneously, eliminate the lower problem of center temperature producing because of backflow, can improve ignition condition, smooth combustion, improves the working condition of combustion chamber.
The technical solution adopted in the utility model is:
A kind of bladed axial swirler with direct current hole, comprise outer shroud hub, interior ring hub, hole cylinder and several camber blades, described several camber blades are evenly arranged between outer shroud hub and interior ring hub, described hole cylinder is sleeved in interior ring hub, and the diameter of described hole cylinder equates with the internal diameter of interior ring hub; The center of described hole cylinder is provided with an atomizer pedestal, and the periphery of described atomizer pedestal is provided with several direct current holes, and the axial of hole cylinder run through in described direct current hole; Described outer shroud hub, interior ring hub, hole cylinder and atomizer pedestal have identical central axis.
Further, the both ends of the surface of camber blades respectively with the two end faces of hole cylinder in same plane.
Further, a side of described camber blades is connected with outer shroud hub, and opposite side is connected with interior ring hub, and two coupling parts form two space curves.
Further, described camber blades are 12.
Further, described direct current hole is six.
Further, described several direct current holes are evenly distributed on the post circle of hole cylinder.
Bladed axial swirler with direct current hole described in the utility model is by reasonably arranging section direct current hole pass into direct current wind of the surrounding at cyclone center, the area of recirculating zone obviously strengthens, reduced recirculating zone negative pressure, weakened the filling effect of main flow, reduced the turbulence intensity of wake flow, made to move after the point of main flow, cause recirculating zone elongated, thereby increase fuel oil in the time of staying of recirculating zone, improve atomizing effect, and then overheavy firing; Particularly a small amount of mist of oil forms a flame on duty that is difficult for extinguishing in the recirculating zone of high temperature, low speed, has strengthened the stabilizing power of flame and has improved efficiency of combustion.Due to the reduction of turbulence intensity, fluid loss also can reduce to some extent.Simultaneously near burner inner liner wall place, but temperature with cyclone combustion chamber, direct current hole lower than the temperature without cyclone combustion chamber, direct current hole, cooling very favourable to combustion chamber wall surface like this.
With compared with cyclone combustion chamber, direct current hole, band cyclone combustion chamber, direct current hole intermediate fuel oil atomizing effect is better, and ignition temperature is higher, and the area of high temperature is also obviously bigger than normal, and therefore large with the Rong Qianggeng of cyclone combustion chamber, direct current hole, the efficiency of burning is also higher.In addition, with compared with cyclone combustion chamber, direct current hole, in cyclone exit, with the high temperature section of cyclone combustion chamber, direct current hole, move backward some, avoided like this cyclone and nozzle to be burned.The utility model has been realized overheavy firing by this design, makes flame stabilization simultaneously, and has obtained higher efficiency of combustion.
Accompanying drawing explanation
Fig. 1 is the three-dimensional structure diagram of axial swirler in prior art;
Fig. 2 is the part-structure figure of the bladed axial swirler with direct current hole described in the utility model;
Fig. 3 is the three-dimensional structure diagram of the bladed axial swirler with direct current hole described in the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described further.At this, it should be noted that, for the explanation of these embodiments, be used for helping to understand the utility model, but do not form restriction of the present utility model.In addition,, in each embodiment of described the utility model, involved technical characterictic just can combine mutually as long as do not form each other conflict.
As shown in Figure 2,3, the utility model provides a kind of bladed axial swirler with direct current hole, comprise outer shroud hub 5, interior ring hub 1, hole cylinder 6 and several camber blades 2, described several camber blades 2 are evenly arranged between outer shroud hub 5 and interior ring hub 1, described hole cylinder 6 is sleeved in interior ring hub 1, and the diameter of described hole cylinder 6 equates with the internal diameter of interior ring hub 1; The center of described hole cylinder 6 is provided with an atomizer pedestal 4, and the periphery of described atomizer pedestal 4 is provided with several direct current holes 3, and the axial of hole cylinder 6 run through in described direct current hole 3; Described outer shroud hub 5, interior ring hub 1, hole cylinder 6 and atomizer pedestal 4 have identical central axis 7.
Preferably, described camber blades 2 are 12, and 12 bending tablet blades 2 are evenly arranged between outer shroud hub 5 and interior ring hub 1, and camber blades 2 are around central axis 7 radial locations.One side of each camber blades 2 is all connected with outer shroud hub 5, and opposite side is all connected with interior ring hub 1, and two coupling parts form two space curves.
Preferably, the both ends of the surface of camber blades 2 respectively with the two end faces of hole cylinder 6 in same plane.
Preferably, described direct current hole 3 is six, and six direct current holes 3 are evenly distributed on the post circle of hole cylinder 6.Can certainly select according to actual needs more or less direct current hole 3.
Preferably, the blade tilt of described camber blades 2 reaches 45 °, and the sweep of described camber blades 2 has 45 ° of arc chord angles, and the circular arc feature of described arc chord angle is that take interior ring hub 1 height 1.414 times are as radius.
The utility model, in the situation that keeping existing structure substantially constant, along circumferentially evenly beating some direct currents hole 3, is introduced a certain amount of direct current wind around atomizer pedestal 4.Direct current wind add the adverse pressure gradient that has changed recirculating zone, so just changed the form of recirculating zone, the improvement that brings a series of performances.
The above is preferred embodiment of the present utility model, but the utility model should not be confined to the disclosed content of this embodiment and accompanying drawing.So every, do not depart from the equivalence completing under spirit disclosed in the utility model or revise, all falling into the scope of the utility model protection.
Claims (6)
1. the bladed axial swirler with direct current hole, it is characterized in that, comprise outer shroud hub (5), interior ring hub (1), hole cylinder (6) and several camber blades (2), described several camber blades (2) are evenly arranged between outer shroud hub (5) and interior ring hub (1), described hole cylinder (6) is sleeved in interior ring hub (1), and the diameter of described hole cylinder (6) equates with the internal diameter of interior ring hub (1); The center of described hole cylinder (6) is provided with an atomizer pedestal (4), and the periphery of described atomizer pedestal (4) is provided with several direct current holes (3), and the axial of hole cylinder (6) run through in described direct current hole (3); Described outer shroud hub (5), interior ring hub (1), hole cylinder (6) and atomizer pedestal (4) have identical central axis (7).
2. the bladed axial swirler with direct current hole according to claim 1, is characterized in that, the both ends of the surface of camber blades (2) respectively with the two end faces of hole cylinder (6) in same plane.
3. the bladed axial swirler with direct current hole according to claim 1, is characterized in that, a side of described camber blades (2) is connected with outer shroud hub (5), and opposite side is connected with interior ring hub (1), and two coupling parts form two space curves.
4. the bladed axial swirler with direct current hole according to claim 1, is characterized in that, described camber blades (2) are 12.
5. the bladed axial swirler with direct current hole according to claim 1, is characterized in that, described direct current hole (3) is six.
6. the bladed axial swirler with direct current hole according to claim 1, is characterized in that, described several direct current holes (3) are evenly distributed on the post circle of hole cylinder (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320727294.9U CN203586284U (en) | 2013-11-18 | 2013-11-18 | Axial blade type cyclone with direct flow holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320727294.9U CN203586284U (en) | 2013-11-18 | 2013-11-18 | Axial blade type cyclone with direct flow holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203586284U true CN203586284U (en) | 2014-05-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320727294.9U Expired - Lifetime CN203586284U (en) | 2013-11-18 | 2013-11-18 | Axial blade type cyclone with direct flow holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203586284U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287690A (en) * | 2016-08-08 | 2017-01-04 | 东南大学 | A kind of turbulent burner |
| CN114909676A (en) * | 2022-04-28 | 2022-08-16 | 西北工业大学 | Can regulate and control single-stage axial swirler of whirl intensity |
| CN115076720A (en) * | 2022-05-17 | 2022-09-20 | 南京航空航天大学 | Special-shaped swirler matched with flow field characteristics of trapped vortex combustor |
-
2013
- 2013-11-18 CN CN201320727294.9U patent/CN203586284U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287690A (en) * | 2016-08-08 | 2017-01-04 | 东南大学 | A kind of turbulent burner |
| CN114909676A (en) * | 2022-04-28 | 2022-08-16 | 西北工业大学 | Can regulate and control single-stage axial swirler of whirl intensity |
| CN115076720A (en) * | 2022-05-17 | 2022-09-20 | 南京航空航天大学 | Special-shaped swirler matched with flow field characteristics of trapped vortex combustor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |