CN104454641B - Electric express locomotive cooling system low noise axial flow fan vane wheel - Google Patents
Electric express locomotive cooling system low noise axial flow fan vane wheel Download PDFInfo
- Publication number
- CN104454641B CN104454641B CN201410640489.9A CN201410640489A CN104454641B CN 104454641 B CN104454641 B CN 104454641B CN 201410640489 A CN201410640489 A CN 201410640489A CN 104454641 B CN104454641 B CN 104454641B
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- China
- Prior art keywords
- blade
- noise reduction
- noise
- cooling system
- axial flow
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
- F04D29/682—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid extraction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
- F04D29/684—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid injection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of electric express locomotive cooling system low noise axial flow fan vane wheel, multiple noise reduction holes are provided with including wheel hub and blade, on blade, noise reduction hole is through hole, and the diameter parallel of the axis in noise reduction hole and wheel hub, the density in noise reduction hole gradually successively decreases from root of blade to blade outer rim；Blade is made of damping alloy material；The perforate coefficient ε in noise reduction hole is 0.08~0.09.The present invention on blade by being provided with noise reduction hole, make the lower noise of draught fan impeller, and blade uses damping alloy material, reduce blower fan vibration in the running, this kind of damping alloy material also has the effect of sound absorption simultaneously, noise is reduce further, electric express locomotive cooling system low noise axial flow fan vane wheel of the present invention has the advantages that noise is low, vibrate small and efficiency high.
Description
Technical field
The present invention relates to cooling system ventilating and cooling technical field, specially a kind of electric express locomotive cooling system is with low
Make an uproar axial flow fan vane wheel.
Background technology
With the development of Chinese Railway technology, the electric express locomotive speed of service is improved therewith, and hauling capacity of a locomotive requirement is got over
Come bigger, incident problem is the sub- device power density more and more higher of electricity for locomotive, the heat dissipated during its work is more next
More, the requirement to motorcycle cooling system is also increasingly harsher, and vibration damping, noise reduction, efficient three indexs are the most important things, compel to be essential
Want that a kind of electric express locomotive cooling system noise is low, vibrate small, efficient axial flow fan vane wheel.
The content of the invention
The present invention for electric express locomotive cooling system in the prior art with axial flow fan vane wheel noise it is high, vibration is big,
The low problem of efficiency, and develop the high efficiency axial flow fan vane wheel that a kind of noise is low, vibration is small.The present invention is used and opened on blade
Having noise reduction hole makes fraction that the non-working surface of blade is flowed to from the working face of blade, non-working surface boundary layer is changed,
Reduce blade separated region size and turbulence intensity, reach the effect for reducing noise；The density in noise reduction hole is from root of blade to leaf
Piece outer rim is gradually successively decreased, and further improves the turbulence level in the flow field of blade；Using vibration damping sound absorption, good mechanical property, corrosion-resistant
Damping alloy material be made, vibrate axial flow fan vane wheel small, and further reduce noise.
Technological means of the invention is as follows：
A kind of electric express locomotive cooling system low noise axial flow fan vane wheel, with wheel hub and blade；It is characterized in that：
It is provided with multiple noise reduction holes on the blade, the noise reduction hole is through hole, the diameter parallel of the axis in noise reduction hole and the wheel hub；Institute
The density that stating blade has root of blade and blade outer rim, the noise reduction hole is gradually successively decreased from root of blade to blade outer rim；Institute
Blade is stated to be made of damping alloy material.Noise reduction hole on blade can make fraction flow to blade from the working face of blade
Non-working surface, is distributed the fluid velocity in non-working surface boundary layer and is changed, and reaches the effect of noise reduction.To axial flow blower leaf
Wheel carries out the discovery of computational fluid dynamics (CFD) simulation analysis, and the turbulence level in axial wheel root of blade flow field is much larger than leaf
The trend for falling progressively is presented from root of blade to blade outer rim for the turbulence level in piece outer rim flow field, turbulence level, and flow field is strong
Turbulent flow can make lift be presented strong unstability, and then cause the noise of impeller to increase, and the present invention is directed to this phenomenon, designs
The density in noise reduction hole is gradually successively decreased from root of blade to blade outer rim, further to optimize the turbulence level in blade flow field, enters one
Step reduces the noise of blade.Damping alloy material has excellent damping property, mechanical performance and stronger corrosion resistance.
Further, the perforate coefficient ε in noise reduction hole is 0.08~0.09 on the blade.
Further, the radius in the noise reduction hole is 2.75mm~5.5mm.
Further, a diameter of 300mm~900mm of projection of the impeller on the wheel hub sagittal plane.
Further, the blade is 7~12, and is uniformly weldingly fixed on the outer peripheral face of the wheel hub.
Further, projection of the respective point in the blade outer rim of the adjacent blades on the wheel hub sagittal plane
It is 200mm~300mm apart from t.
By adopting the above-described technical solution, the electric express locomotive cooling system low noise axial flow blower that the present invention is provided
Impeller has the advantages that simple structure, noise are low, vibration is small, efficiency high and blade corrosion resistance is strong, can adapt at present rapidly
The strict demand of the electric express locomotive cooling system of development.
Brief description of the drawings
Fig. 1 is embodiment of the present invention dimensional structure diagram；
Fig. 2 is the top view of embodiment illustrated in fig. 1；
Fig. 3 is the right view of embodiment illustrated in fig. 1.
In figure：1st, wheel hub, 2, blade, 20, noise reduction hole, 21, root of blade, 22, blade outer rim, 23, blade inlet edge, 24,
Trailing edge, a, working face, b, non-working surface.
Specific embodiment
Electric express locomotive cooling system low noise axial flow fan vane wheel as shown in FIG. 1 to 3, including wheel hub 1 and leaf
Piece 2, blade 2 has 7, and is uniformly weldingly fixed on the outer peripheral face of wheel hub 1；Projection of the impeller on the sagittal plane of wheel hub 1
Diameter D is 300mm~900mm, and blade 2 has root of blade 21, blade outer rim 22, blade inlet edge 23 and trailing edge 24, phase
The projection of respective point in the blade outer rim 22 of adjacent blade 2 on the sagittal plane of the wheel hub 1 apart from t be 200mm~300mm；
Blade 2 has working face a and non-working surface b, and blade 2 is curved, as shown in Figure 3, phase tangent plane and the wheel hub 1 of non-working surface b
The angle β of axis is 47.75 °~52.5 °；Multiple noise reduction holes 20 are provided with blade 2, noise reduction hole 20 is through hole, noise reduction hole 20
Axis direction is parallel with the axis direction of wheel hub 1, and the density in noise reduction hole 20 is gradually successively decreased from root of blade 21 to blade outer rim 22,
Perforate coefficient of the noise reduction hole 20 on blade 2 is 0.08~0.09, and perforate coefficient of the present invention is the area of perforate on blade 2
With the ratio of the surface area of the working face a of blade 2；The radius in noise reduction hole 20 is 2.75mm~5.5mm；Blade 2 is in different cross section
On thickness differ, in the gradually thinning trend of 23/ trailing edge 24 from centre to blade inlet edge；Blade 2 uses work(
Can property material damping alloy be made, can specifically use Mn-Cu-Al alloys, this kind of alloy have vibration damping sound absorption, good mechanical property,
The advantage of highly corrosion resistant, reduces blower fan vibration in the running, while this kind of damping alloy material also has the work of sound absorption
With.
There is the liter that vortex is separated and acts on blade mainly due to blade air exit in noise produced by blower fan
Caused by power, any large scale turbulent flow will produce additional lift pulsation before blade, so that noise radiation substantially increases.In order to
The turbulence noise of blower fan is reduced, the present invention takes the method to opening noise reduction hole 20 on fan blade 2.Blower fan work blade air goes out
Mouthful place generates vortex because of turbulent flow and separates, and formation Disengagement zone makes part gas using the method for opening on blade 2 noise reduction hole 20
Stream flows to non-working surface b from the working face a of blade 2, is distributed the fluid velocity in inactive face b boundary layers and is changed,
Fluid in boundary layer obtains new kinetic energy and overcomes frictional resistance, promotes burble point to be moved to blade air exit, so as to subtract
Lack the size and turbulence intensity of the Disengagement zone in blade air exit, reach the effect for reducing noise.Wherein border
Layer refers to the slow fluid layer of a laminar flow that air-flow is produced in blade surface due to the influence of stickiness itself.
The discovery of computational fluid dynamics (CFD) simulation analysis, axial wheel root of blade 21 are carried out to axial flow fan vane wheel
, much larger than the turbulence level in the flow field of blade outer rim 22, turbulence level is from root of blade 21 to blade outer rim 22 for the turbulence level in flow field
The trend that presentation is fallen progressively, and the strong turbulent flow in flow field can make lift that strong unstability is presented, and then cause the noise of impeller
Increase, the density in design noise reduction hole 20 is gradually successively decreased from root of blade 21 to blade outer rim 22, can improve the flow field of draught fan impeller
Turbulence level, further reduce noise, improve the performance of draught fan impeller.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept is subject to equivalent or change, should all be included within the scope of the present invention.
Claims (4)
1. a kind of electric express locomotive cooling system low noise axial flow fan vane wheel, with wheel hub and blade；It is characterized in that：Institute
State and be provided with blade multiple noise reduction holes, the noise reduction hole is through hole, the diameter parallel of the axis in noise reduction hole and the wheel hub；It is described
The density that blade has root of blade and blade outer rim, the noise reduction hole is gradually successively decreased from root of blade to blade outer rim；It is described
Blade is made of damping alloy material,
The blade is 7~12, and is uniformly weldingly fixed on the outer peripheral face of the wheel hub,
The projection of respective point in the blade outer rim of the adjacent blade on the wheel hub sagittal plane apart from t be 200mm~
300mm。
2. electric express locomotive cooling system low noise axial flow fan vane wheel according to claim 1, it is characterised in that：Institute
The perforate coefficient ε for stating noise reduction hole on blade is 0.08~0.09.
3. electric express locomotive cooling system low noise axial flow fan vane wheel according to claim 1, it is characterised in that：Institute
The radius for stating noise reduction hole is 2.75mm~5.5mm.
4. electric express locomotive cooling system low noise axial flow fan vane wheel according to claim 1, it is characterised in that：Institute
The diameter D for stating projection of the impeller on the wheel hub sagittal plane is 300mm~900mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410640489.9A CN104454641B (en) | 2014-11-13 | 2014-11-13 | Electric express locomotive cooling system low noise axial flow fan vane wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410640489.9A CN104454641B (en) | 2014-11-13 | 2014-11-13 | Electric express locomotive cooling system low noise axial flow fan vane wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104454641A CN104454641A (en) | 2015-03-25 |
| CN104454641B true CN104454641B (en) | 2017-06-16 |
Family
ID=52901222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410640489.9A Active CN104454641B (en) | 2014-11-13 | 2014-11-13 | Electric express locomotive cooling system low noise axial flow fan vane wheel |
Country Status (1)
| Country | Link |
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| CN (1) | CN104454641B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351249A (en) * | 2015-11-27 | 2016-02-24 | 湖南中通电气股份有限公司 | Fan propeller for silicone element heat dissipation of electric locomotive |
| CN106930977A (en) * | 2017-03-17 | 2017-07-07 | 中国大唐集团科技工程有限公司 | A kind of direct-cooled noise reduction axial flow blower |
| CN107339260B (en) * | 2017-04-11 | 2023-07-21 | 宁波方太厨具有限公司 | Boosting flow centrifugal fan |
| CN107313979B (en) * | 2017-08-31 | 2019-04-30 | 广东美的制冷设备有限公司 | Axial-flow windwheel and air conditioner with it |
| CN108194427A (en) * | 2018-01-08 | 2018-06-22 | 梁耀文 | A kind of polygon wheel hub low-noise cooling tower axial flow blower |
| CN109162965B (en) * | 2018-11-06 | 2020-11-20 | 台州威斯顿机电有限公司 | Energy-saving water pump capable of accelerating water transmission |
| DE102019105190A1 (en) * | 2019-02-28 | 2020-09-03 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Axial fan with noise-reducing fan blades |
| CN110410880A (en) * | 2019-08-29 | 2019-11-05 | 代元军 | A kind of trailing edge is in the air-conditioner outdoor unit of microcellular structure |
| CN111022813B (en) * | 2019-12-03 | 2021-08-03 | 四川大学 | Porous current-limiting noise-reducing pore plate and current-limiting noise reducer formed by same |
| CN110905859A (en) * | 2019-12-26 | 2020-03-24 | 兰州理工大学 | Inducer capable of improving cavitation performance |
| CN113757170A (en) * | 2021-09-30 | 2021-12-07 | 苏州浪潮智能科技有限公司 | High-air-volume low-noise fan blade, fan and design method of fan blade |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07243397A (en) * | 1994-03-02 | 1995-09-19 | Matsushita Refrig Co Ltd | Air blower |
| JP3252270B2 (en) * | 1995-04-13 | 2002-02-04 | 松下電器産業株式会社 | Blower impeller |
| JP2005240749A (en) * | 2004-02-27 | 2005-09-08 | Mitsubishi Electric Corp | Blower |
| CN101440822A (en) * | 2008-11-28 | 2009-05-27 | 中山大洋电机股份有限公司 | Axial-flow fan and fan blade of centrifugal fan |
| CN102644623A (en) * | 2012-04-16 | 2012-08-22 | 广东美的制冷设备有限公司 | Axial-flow wind wheel |
| CN102635572A (en) * | 2012-04-27 | 2012-08-15 | 浙江理工大学 | Blade perforated small axial fan |
-
2014
- 2014-11-13 CN CN201410640489.9A patent/CN104454641B/en active Active
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| CN104454641A (en) | 2015-03-25 |
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Address after: 116021 Shahekou, Liaoning, China No. 49 The Strip Patentee after: CRRC DALIAN INSTITUTE CO., LTD. Address before: 116021 Shahekou, Liaoning, China No. 49 The Strip Patentee before: CNR Dalian Locomotive Research Institute Co., Ltd. |