CN109268192A - A kind of low-specific-speed noise reduction cylinder blade - Google Patents
A kind of low-specific-speed noise reduction cylinder blade Download PDFInfo
- Publication number
- CN109268192A CN109268192A CN201810989808.5A CN201810989808A CN109268192A CN 109268192 A CN109268192 A CN 109268192A CN 201810989808 A CN201810989808 A CN 201810989808A CN 109268192 A CN109268192 A CN 109268192A
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- CN
- China
- Prior art keywords
- low
- specific
- blade
- cylinder blade
- noise reduction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000009467 reduction Effects 0.000 title claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 230000010349 pulsation Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 230000001788 irregular Effects 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 description 7
- 102000016751 Fringe-like Human genes 0.000 description 5
- 108050006300 Fringe-like Proteins 0.000 description 5
- 238000005457 optimization Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000011664 nicotinic acid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000003592 biomimetic effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/12—Blades; Blade-carrying rotors
- F03B3/121—Blades, their form or construction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2250/00—Geometry
- F05B2250/60—Structure; Surface texture
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/96—Preventing, counteracting or reducing vibration or noise
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of low-specific-speed noise reduction cylinder blade is mainly used in centrifugal pump low-specific-speed cylinder blade.Low specific speed impeller lift is high, and flow is small, and efficiency is lower, simultaneously because the diffusion of area of passage is easy to happen flow separation, forms the formation and dissipation of more strong vortex, induced pressure pulsation, hydrodynamic is larger, particularly evident under the conditions of low flow rate condition.In the present invention, blade surface is optimized using the biological characteristics by hawk wing, the groove concaveconvex structure of the striated on hawk wing is used for reference to change the surface smooth form of cylinder blade, guide functions are played with stripe groove concaveconvex structure, the turbulent flow of rule will be changed by the irregular turbulent flow of blade surface, and then the vortex for reducing blade surface is detached from and the pressure fluctuation excited and eddy current crack.
Description
Technical field
This application of structural design field is that the blade surface noise reduction of vane type waterpower driven rotary machinery optimizes, specific in low
Specific speed impeller cylinder blade.
Background technique
The lift of low specific speed impeller is high, and flow is small, and efficiency is lower, simultaneously because the diffusion of area of passage is easy to happen stream
Dynamic separation forms the formation and dissipation of more strong vortex, induced pressure pulsation, so that more strong waterpower be caused to make an uproar
Sound, while the loss of energy is also brought along, certain hydraulic loss is in turn resulted in, is also had to the working efficiency of impeller certain
It reduces, these phenomenons are particularly evident under low flow rate condition.
Summary of the invention
The purpose of the invention is to overcome above-mentioned existing technical deficiency, a kind of low-specific-speed cylinder blade surface is provided
Optimizing structure design method.Hawk wing biomimetic features provided by the present invention, can be in few situation that the production cost increases
Under, improve very much the hydraulic performance and noise optimization of low specific-speed centrifugal pump in a effective manner.
To achieve the goals above, the technical solution adopted by the present invention are as follows: a kind of low-specific-speed noise reduction cylinder blade, including
Basic low-specific-speed cylinder blade, the cylinder blade surface on basis are subject to size and match with the striated structure parameter on hawk wing
Several fringe-like structures.
Blade progress is matched with hawk wing groove concaveconvex structure relevant parameter at intervals with above-mentioned fringe-like structures
Depth cutting, to be formed with the groove concaveconvex structure of intermittent in blade surface.
The principle of the present invention is: improving fluid by increasing striated concaveconvex structure in low-specific-speed cylinder blade surface
In the mobility status of blade surface, to reduce noise, hydraulic performance is improved.Blade relative to prophyll piece, after bionic optimization
Surface has Non-smooth surface form, and the trend of these structures is consistent in the flow direction of blade surface with water, this striated
Structure can change the flow regime of blade surface fluid, play guide functions, promote the fluid of blade surface from turbulent shape to
The transformation of laminar flow shape, and then reduce eddy current crack and fluctuation pressure noise that turbulent gas generates.
Detailed description of the invention
Fig. 1 is the basis low-specific-speed cylindrical impeller three-dimensional figure used in specific implementation case in the present invention；
Fig. 2 is the 3-D effect schematic diagram of the present invention in specific implementation；
The partial enlargement diagram of 3 d effect graph of Fig. 3 present invention after specific implementation；
Fig. 4 is the stereoscopic schematic diagram of one of blade of the present invention after specific implementation；
Fig. 5 is that the X-Y scheme of the axial plane cross section of one of blade of the present invention after specific implementation and axis plane projection show
It is intended to.
Specific embodiment
In order to realize the present invention technological means, character of innovation, reach purpose and effect is easy to understand, tie below
Closing the drawings and specific embodiments, the present invention is further explained.
Embodiment 1: the foundation cylinder blade of example 1 can obtain the basic blade as shown in the three-dimensional figure of Fig. 1, according to measurement is calculated
Area S=15000mm2。
Shape of stripes parameter on hawk wing is specifically as shown in table 1
Table 1
According to the principle of geometric similarity, following formula is obtained:
In formula:
Surface area (the mm of S- blade2)
The height (mm) of H- blade surface striped cutting
The width (mm) of B- blade surface striped cutting
C- blade surface needs the fringe spacing (mm) cut
Meaning representated by specific parameter is as shown in Figure 4.
The formula obtained in conjunction with the geometric parameter of example 1 with the parameter and geometrical similarity principle of shape of stripes on hawk wing
It can calculate, the parameter of the blade bionic optimization fringe-like structures of example 1, H=1.3, B=3.7mm, C=7mm, i.e., in leaf
The fringe-like structures on piece surface are that cutting width is 3.7mm, and 7mm is divided between the groove of cutting, and the depth of cutting is 1.3mm, and
And the blade after processing is as shown in Fig. 2 and Fig. 3 and Fig. 4.
The present invention has used for reference the striated concaveconvex structure of the Non-smooth surface of hawk wing, and combines geometrical similarity principle to design
The parameter B and C of the fringe-like structures of blade surface processing, and the correlation public affairs of the depth H in blade surface cutting are gone out to calculate
Formula to obtain the specific geometric parameter in the groove concaveconvex structure of low-specific-speed cylinder blade bionic optimization, and then is completed whole
The noise reduction of a blade optimizes.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not to protection of the invention
The limitation of range, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art
Member does not need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (3)
1. a kind of low-specific-speed noise reduction cylinder blade, it is characterised in that: the ditch of multiple striateds is arranged on cylinder blade surface
Geosynclinal concave male structure.
2. a kind of low-specific-speed noise reduction cylinder blade as claimed in claim 1, it is characterised in that: the groove bumps knot of striated
Structure is uniformly distributed, and groove number 3, depth 1.3mm.
3. a kind of low-specific-speed noise reduction cylinder blade as claimed in claim 1, it is characterised in that: groove continuously entirely covers leaf
Piece surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810989808.5A CN109268192A (en) | 2018-08-28 | 2018-08-28 | A kind of low-specific-speed noise reduction cylinder blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810989808.5A CN109268192A (en) | 2018-08-28 | 2018-08-28 | A kind of low-specific-speed noise reduction cylinder blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109268192A true CN109268192A (en) | 2019-01-25 |
Family
ID=65154818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810989808.5A Pending CN109268192A (en) | 2018-08-28 | 2018-08-28 | A kind of low-specific-speed noise reduction cylinder blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109268192A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1119006A (en) * | 1997-07-08 | 1999-01-26 | Hitachi Ltd | Vacuum cleaner |
| CN1386983A (en) * | 2002-06-06 | 2002-12-25 | 孙敏超 | Efficient propeller with blades curled backward for centrifugal propeller machinery |
| US20130101446A1 (en) * | 2011-10-19 | 2013-04-25 | Baker Hughes Incorporated | High efficiency impeller |
| CN103195744A (en) * | 2013-04-09 | 2013-07-10 | 江苏大学 | Low specific speed impeller with function of drag reduction by grooves |
| CN104564802A (en) * | 2015-01-06 | 2015-04-29 | 浙江理工大学 | Novel volute-less centrifugal ventilator with resistance reduction grooves |
| CN208982211U (en) * | 2018-08-28 | 2019-06-14 | 江苏大学镇江流体工程装备技术研究院 | A kind of low-specific-speed noise reduction cylinder blade |
-
2018
- 2018-08-28 CN CN201810989808.5A patent/CN109268192A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1119006A (en) * | 1997-07-08 | 1999-01-26 | Hitachi Ltd | Vacuum cleaner |
| CN1386983A (en) * | 2002-06-06 | 2002-12-25 | 孙敏超 | Efficient propeller with blades curled backward for centrifugal propeller machinery |
| US20130101446A1 (en) * | 2011-10-19 | 2013-04-25 | Baker Hughes Incorporated | High efficiency impeller |
| CN103195744A (en) * | 2013-04-09 | 2013-07-10 | 江苏大学 | Low specific speed impeller with function of drag reduction by grooves |
| CN104564802A (en) * | 2015-01-06 | 2015-04-29 | 浙江理工大学 | Novel volute-less centrifugal ventilator with resistance reduction grooves |
| CN208982211U (en) * | 2018-08-28 | 2019-06-14 | 江苏大学镇江流体工程装备技术研究院 | A kind of low-specific-speed noise reduction cylinder blade |
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